Find science on or your birthday

Today in Science History - Quickie Quiz
Who said: “Truth is ever to be found in simplicity, and not in the multiplicity and confusion of things.”
more quiz questions >>
Home > Category Index for Science Quotations > Category Index M > Category: Measurement

Measurement Quotes (112 quotes)

La determination de la relation & de la dépendance mutuelle de ces données dans certains cas particuliers, doit être le premier but du Physicien; & pour cet effet, il falloit one mesure exacte qui indiquât d’une manière invariable & égale dans tous les lieux de la terre, le degré de l'électricité au moyen duquel les expéiences ont été faites… Aussi, l'histoire de l'électricité prouve une vérité suffisamment reconnue; c'est que le Physicien sans mesure ne fait que jouer, & qu'il ne diffère en cela des enfans, que par la nature de son jeu & la construction de ses jouets.
The determination of the relationship and mutual dependence of the facts in particular cases must be the first goal of the Physicist; and for this purpose he requires that an exact measurement may be taken in an equally invariable manner anywhere in the world… Also, the history of electricity yields a well-known truth—that the physicist shirking measurement only plays, different from children only in the nature of his game and the construction of his toys.
'Mémoire sur la mesure de force de l'électricité', Journal de Physique (1782), 21, 191. English version by Google Translate tweaked by Webmaster.
Science quotes on:  |  Case (16)  |  Child (90)  |  Construction (36)  |  Demonstration (29)  |  Dependence (21)  |  Determination (37)  |  Difference (135)  |  Exact (16)  |  Fact (325)  |  Game (28)  |  Goal (36)  |  History Of Science (34)  |  Instrument (40)  |  Mutual (12)  |  Nature (534)  |  Particular (24)  |  Physicist (74)  |  Physics (156)  |  Play (22)  |  Recognition (38)  |  Relationship (37)  |  Requirement (27)  |  Toy (8)  |  Truth (450)  |  World (231)

Tolle numerum omnibus rebus et omnia pereunt.
Take from all things their number and all shall perish.
Etymologies [c.600], Book III, chapter 4, quoted in E. Grant (ed.), A Source Book in Medieval Science (1974), trans. E. Brehaut (1912), revised by E. Grant, 5.
Science quotes on:  |  Number (90)

A parable: A man was examining the construction of a cathedral. He asked a stone mason what he was doing chipping the stones, and the mason replied, “I am making stones.” He asked a stone carver what he was doing. “I am carving a gargoyle.” And so it went, each person said in detail what they were doing. Finally he came to an old woman who was sweeping the ground. She said. “I am helping build a cathedral.”
...Most of the time each person is immersed in the details of one special part of the whole and does not think of how what they are doing relates to the larger picture.
[For example, in education, a teacher might say in the next class he was going to “explain Young's modulus and how to measure it,” rather than, “I am going to educate the students and prepare them for their future careers.”]
In The Art of Doing Science and Engineering: Learning to Learn (1975, 2005), 195.
Science quotes on:  |  Building (34)  |  Career (29)  |  Cathedral (9)  |  Class (27)  |  Construction (36)  |  Detail (33)  |  Explanation (88)  |  Future (110)  |  Mason (2)  |  Part (55)  |  Preparation (22)  |  Relation (35)  |  Special (25)  |  Stone (20)  |  Teacher (54)  |  Thinking (166)  |  Whole (46)  |  Woman (36)

A poet is, after all, a sort of scientist, but engaged in a qualitative science in which nothing is measurable. He lives with data that cannot be numbered, and his experiments can be done only once. The information in a poem is, by definition, not reproducible. ... He becomes an equivalent of scientist, in the act of examining and sorting the things popping in [to his head], finding the marks of remote similarity, points of distant relationship, tiny irregularities that indicate that this one is really the same as that one over there only more important. Gauging the fit, he can meticulously place pieces of the universe together, in geometric configurations that are as beautiful and balanced as crystals.
In The Medusa and the Snail: More Notes of a Biology Watcher (1974, 1995), 107.
Science quotes on:  |  Balance (24)  |  Beauty (88)  |  Configuration (3)  |  Crystal (22)  |  Data (59)  |  Definition (86)  |  Distance (26)  |  Engagement (4)  |  Equivalent (7)  |  Examination (47)  |  Experiment (369)  |  Fit (12)  |  Geometry (68)  |  Importance (106)  |  Indication (15)  |  Information (56)  |  Irregularity (5)  |  Life (460)  |  Mark (14)  |  Nothing (89)  |  Number (90)  |  Once (2)  |  Piece (13)  |  Poem (76)  |  Poet (26)  |  Point (29)  |  Qualitative (4)  |  Relationship (37)  |  Remote (11)  |  Reproducibility (2)  |  Science (875)  |  Scientist (237)  |  Similarity (14)  |  Sort (7)  |  Thing (27)  |  Thought (170)  |  Tiny (9)  |  Universe (291)

Absolute space, of its own nature without reference to anything external, always remains homogenous and immovable. Relative space is any movable measure or dimension of this absolute space; such a measure or dimension is determined by our senses from the situation of the space with respect to bodies and is popularly used for immovable space, as in the case of space under the earth or in the air or in the heavens, where the dimension is determined from the situation of the space with respect to the earth. Absolute and relative space are the same in species and in magnitude, but they do not always remain the same numerically. For example, if the earth moves, the space of our air, which in a relative sense and with respect to the earth always remains the same, will now be one part of the absolute space into which the air passes, now another part of it, and thus will be changing continually in an absolute sense.
The Principia: Mathematical Principles of Natural Philosophy (1687), 3rd edition (1726), trans. I. B. Cohen and Anne Whitman (1999), Definitions, Scholium, 408-9.
Science quotes on:  |  Absolute (32)  |  Air (84)  |  Dimension (12)  |  Earth (250)  |  Heaven (55)  |  Magnitude (14)  |  Relative (11)  |  Sense (104)  |  Space (68)

Absolute, true, and mathematical time, in and of itself and of its own nature, without reference to anything external, flows uniformly and by another name is called duration. Relative, apparent, and common time is any sensible and external measure (precise or imprecise) of duration by means of motion; such as a measure—for example, an hour, a day, a month, a year—is commonly used instead of true time.
The Principia: Mathematical Principles of Natural Philosophy (1687), 3rd edition (1726), trans. I. B. Cohen and Anne Whitman (1999), Definitions, Scholium, 408.
Science quotes on:  |  Absolute (32)  |  Apparent (9)  |  Day (20)  |  Duration (5)  |  External (18)  |  Flow (14)  |  Hour (13)  |  Month (7)  |  Precision (19)  |  Relative (11)  |  Sensible (11)  |  Time (170)  |  Uniformity (12)  |  Year (69)

According to my views, aiming at quantitative investigations, that is at establishing relations between measurements of phenomena, should take first place in the experimental practice of physics. By measurement to knowledge [door meten tot weten] I should like to write as a motto above the entrance to every physics laboratory.
'The Significance of Quantitative Research in Physics', Inaugural Address at the University of Leiden (1882). In Hendrik Casimir, Haphazard Reality: Half a Century of Science (1983), 160-1.
Science quotes on:  |  Knowledge (679)  |  Laboratory (75)  |  Motto (13)

Accurate and minute measurement seems to the non-scientific imagination, a less lofty and dignified work than looking for something new. But nearly all the grandest discoveries of science have been but the rewards of accurate measurement and patient long-continued labour in the minute sifting of numerical results.
Presidential inaugural address, to the General Meeting of the British Association, Edinburgh (2 Aug 1871). In Report of the Forty-First Meeting of the British Association for the Advancement of Science (1872) By xci.
Science quotes on:  |  Accuracy (34)  |  Dignity (7)  |  Discovery (360)  |  Imagination (130)  |  Labour (27)  |  Lofty (4)  |  Looking (15)  |  Minuteness (3)  |  New (107)  |  Non-Scientific (3)  |  Number (90)  |  Patience (16)  |  Result (129)  |  Reward (21)  |  Work (198)

All human affairs follow nature's great analogue, the growth of vegetation. There are three periods of growth in every plant. The first, and slowest, is the invisible growth by the root; the second and much accelerated is the visible growth by the stem; but when root and stem have gathered their forces, there comes the third period, in which the plant quickly flashes into blossom and rushes into fruit.
The beginnings of moral enterprises in this world are never to be measured by any apparent growth. ... At length comes the sudden ripeness and the full success, and he who is called in at the final moment deems this success his own. He is but the reaper and not the labourer. Other men sowed and tilled and he but enters into their labours.
Life Thoughts (1858), 20.
Science quotes on:  |  Analogue (3)  |  Blossom (5)  |  Calling (2)  |  Discovery (360)  |  Entering (2)  |  Enterprise (6)  |  Fruit (31)  |  Growth (70)  |  Human (168)  |  Invention (174)  |  Invisible (10)  |  Labour (27)  |  Labourer (2)  |  Moral (38)  |  Nature (534)  |  Research (360)  |  Ripeness (2)  |  Root (19)  |  Science And Religion (159)  |  Soil (24)  |  Sowing (4)  |  Stem (7)  |  Success (114)  |  Vegetation (12)

All the modern higher mathematics is based on a calculus of operations, on laws of thought. All mathematics, from the first, was so in reality; but the evolvers of the modern higher calculus have known that it is so. Therefore elementary teachers who, at the present day, persist in thinking about algebra and arithmetic as dealing with laws of number, and about geometry as dealing with laws of surface and solid content, are doing the best that in them lies to put their pupils on the wrong track for reaching in the future any true understanding of the higher algebras. Algebras deal not with laws of number, but with such laws of the human thinking machinery as have been discovered in the course of investigations on numbers. Plane geometry deals with such laws of thought as were discovered by men intent on finding out how to measure surface; and solid geometry with such additional laws of thought as were discovered when men began to extend geometry into three dimensions.
Lectures on the Logic of Arithmetic (1903), Preface, 18-19.
Science quotes on:  |  Algebra (21)  |  Arithmetic (38)  |  Calculus (14)  |  Dimension (12)  |  Discovery (360)  |  Geometry (68)  |  Investigation (83)  |  Number (90)  |  Operation (53)  |  Solid (14)  |  Surface (37)  |  Teacher (54)  |  Thinking (166)  |  Track (3)  |  Understanding (231)  |  Wrong (50)

Although this may seem a paradox, all exact science is dominated by the idea of approximation. When a man tells you that he knows the exact truth about anything, you are safe in infering that he is an inexact man. Every careful measurement in science is always given with the probable error ... every observer admits that he is likely wrong, and knows about how much wrong he is likely to be.
In The Scientific Outlook (1931, 2009), 42.
Science quotes on:  |  Error (152)  |  Truth (450)

An experiment is a question which science poses to Nature, and a measurement is the recording of Nature's answer.
'The Meaning and Limits of Exact Science', Science (30 Sep 1949), 110, No. 2857, 325. Advance reprinting of chapter from book Max Planck, Scientific Autobiography (1949), 110.
Science quotes on:  |  Answer (96)  |  Experiment (369)  |  Nature (534)  |  Pose (2)  |  Question (159)  |  Recording (4)  |  Science (875)

And from this such small difference of eight minutes [of arc] it is clear why Ptolemy, since he was working with bisection [of the linear eccentricity], accepted a fixed equant point... . For Ptolemy set out that he actually did not get below ten minutes [of arc], that is a sixth of a degree, in making observations. To us, on whom Divine benevolence has bestowed the most diligent of observers, Tycho Brahe, from whose observations this eight-minute error of Ptolemy's in regard to Mars is deduced, it is fitting that we accept with grateful minds this gift from God, and both acknowledge and build upon it. So let us work upon it so as to at last track down the real form of celestial motions (these arguments giving support to our belief that the assumptions are incorrect). This is the path I shall, in my own way, strike out in what follows. For if I thought the eight minutes in [ecliptic] longitude were unimportant, I could make a sufficient correction (by bisecting the [linear] eccentricity) to the hypothesis found in Chapter 16. Now, because they could not be disregarded, these eight minutes alone will lead us along a path to the reform of the whole of Astronomy, and they are the matter for a great part of this work.
Astronomia Nova, New Astronomy (1609), ch. 19, 113-4, Johannes Kepler Gesammelte Werke (1937-), Vol. 3, 177-8.
Science quotes on:  |  Astronomy (105)  |  Tycho Brahe (19)  |  Mars (14)  |  Observation (264)  |  Orbit (36)  |  Ptolemy (10)

As evolutionary time is measured, we have only just turned up and have hardly had time to catch breath, still marveling at our thumbs, still learning to use the brand-new gift of language. Being so young, we can be excused all sorts of folly and can permit ourselves the hope that someday, as a species, we will begin to grow up.
In Lewis Thomas, 'Introduction', from Horace Freeland Judson, The Search for Solutions (1980, 1987), xvii.
Science quotes on:  |  Beginning (71)  |  Breath (15)  |  Catch (8)  |  Evolution (342)  |  Excuse (4)  |  Folly (10)  |  Gift (26)  |  Growth (70)  |  Hope (50)  |  Language (71)  |  Learning (130)  |  Marvel (16)  |  New (107)  |  Ourselves (6)  |  Permission (3)  |  Someday (3)  |  Species (96)  |  Thumb (4)  |  Time (170)  |  Turn (22)  |  Young (20)

As there is not in human observation proper means for measuring the waste of land upon the globe, it is hence inferred, that we cannot estimate the duration of what we see at present, nor calculate the period at which it had begun; so that, with respect to human observation, this world has neither a beginning nor an end.
Abstract of a Dissertation... Concerning the System of the Earth, its Duration, and Stability (1785), 28.
Science quotes on:  |  Age Of The Earth (10)  |  Observation (264)

Astronomy may be revolutionized more than any other field of science by observations from above the atmosphere. Study of the planets, the Sun, the stars, and the rarified matter in space should all be profoundly influenced by measurements from balloons, rockets, probes and satellites. ... In a new adventure of discovery no one can foretell what will be found, and it is probably safe to predict that the most important new discovery that will be made with flying telescopes will be quite unexpected and unforeseen. (1961)
Opening and closing of 'Flying Telescopes', Bulletin of the Atomic Scientists (May 1961), Vol. 17, No. 5, 191 and 194.
Science quotes on:  |   (26)  |  Astronomy (105)  |  Atmosphere (42)  |  Balloon (6)  |  Matter (135)  |  Observation (264)  |  Planet (84)  |  Prediction (48)  |  Probe (3)  |  Profound (23)  |  Revolution (34)  |  Rocket (18)  |  Satellite (12)  |  Space (68)  |  Star (132)  |  Study (157)  |  Sun (115)

Before an experiment can be performed, it must be planned—the question to nature must be formulated before being posed. Before the result of a measurement can be used, it must be interpreted—nature's answer must be understood properly. These two tasks are those of the theorist, who finds himself always more and more dependent on the tools of abstract mathematics. Of course, this does not mean that the experimenter does not also engage in theoretical deliberations. The foremost classical example of a major achievement produced by such a division of labor is the creation of spectrum analysis by the joint efforts of Robert Bunsen, the experimenter, and Gustav Kirchoff, the theorist. Since then, spectrum analysis has been continually developing and bearing ever richer fruit.
'The Meaning and Limits of Exact Science', Science (30 Sep 1949), 110, No. 2857, 325. Advance reprinting of chapter from book Max Planck, Scientific Autobiography (1949), 110.
Science quotes on:  |  Abstract (19)  |  Achievement (73)  |  Answer (96)  |  Bearing (5)  |  Robert Bunsen (8)  |  Collaboration (9)  |  Continuing (2)  |  Creation (129)  |  Dependence (21)  |  Development (122)  |  Example (21)  |  Experiment (369)  |  Experimenter (9)  |  Formulation (14)  |  Fruit (31)  |  Interpretation (38)  |  Kirchoff_Gustav (3)  |  Labor (18)  |  Mathematics (367)  |  Nature (534)  |  Performance (16)  |  Plan (40)  |  Question (159)  |  Result (129)  |  Richness (8)  |  Task (32)  |  Theorist (7)  |  Tool (30)  |  Understanding (231)  |  Use (54)

Can a physicist visualize an electron? The electron is materially inconceivable and yet, it is so perfectly known through its effects that we use it to illuminate our cities, guide our airlines through the night skies and take the most accurate measurements. What strange rationale makes some physicists accept the inconceivable electrons as real while refusing to accept the reality of a Designer on the ground that they cannot conceive Him?
In letter to California State board of Education (14 Sep 1972).
Science quotes on:  |  Accuracy (34)  |  Airplane (16)  |  Designer (6)  |  Effect (72)  |  Electron (43)  |  God (234)  |  Illumination (9)  |  Inconceivable (2)  |  Knowledge (679)  |  Material (60)  |  Physicist (74)  |  Reality (67)  |  Refusal (11)  |  Science And Religion (159)

Cosmology is a science which has only a few observable facts to work with. The discovery of the cosmic microwave background radiation added one—the present radiation temperature of the universe. This, however, was a significant increase in our knowledge since it requires a cosmology with a source for the radiation at an early epoch and is a new probe of that epoch. More sensitive measurements of the background radiation in the future will allow us to discover additional facts about the universe.
'Discovery of the Cosmic Microwave Background', in B. Bertotti (ed.) Modern Cosmology in Retrospect (1990), 304.
Science quotes on:  |  Background (13)  |  Cosmology (11)  |  Discovery (360)  |  Fact (325)  |  Increase (36)  |  Knowledge (679)  |  Microwave (2)  |  Observation (264)  |  Radiation (13)  |  Temperature (23)  |  Universe (291)

For the better part of my last semester at Garden City High, I constructed a physical pendulum and used it to make a “precision” measurement of gravity. The years of experience building things taught me skills that were directly applicable to the construction of the pendulum. Twenty-five years later, I was to develop a refined version of this measurement using laser-cooled atoms in an atomic fountain interferometer.
[Outcome of high school physics teacher, Thomas Miner, encouraging Chu's ambitious laboratory project.]
Autobiography in Gösta Ekspong (ed.), Nobel Lectures: Physics 1996-2000 (2002), 116.
Science quotes on:  |  Education (177)  |  Experiment (369)  |  Gravity (59)  |  Pendulum (10)

From him [Wilard Bennett] I learned how different a working laboratory is from a student laboratory. The answers are not known!
[While an undergraduate, doing experimental measurements in the laboratory of his professor, at Ohio State University.]
From autobiography on Nobel Prize website.
Science quotes on:  |  Answer (96)  |  Experiment (369)  |  Laboratory (75)  |  Student (54)

Give 'em 2.5 cm, and they'll take 1.6 km.
Anonymous
Science quotes on:  |  Give (8)  |  Inch (3)  |  Metric System (5)  |  Mile (11)  |  Quip (68)  |  Take (4)

Go, wondrous creature, mount where science guides.
Go, measure earth, weigh air, and state the tides;
Instruct the planets in what orbs to run,
Correct old Time, and regulate the sun;
Go, teach Eternal Wisdom how to rule,
Then drop into thyself and be a fool.
Quoted in James Wood Dictionary of Quotations from Ancient and Modern, English and Foreign Sources (1893), 125.

His [Henry Cavendish's] Theory of the Universe seems to have been, that it consisted solely of a multitude of objects which could be weighed, numbered, and measured; and the vocation to which he considered himself called was, to weigh, number and measure as many of those objects as his allotted three-score years and ten would permit. This conviction biased all his doings, alike his great scientific enterprises, and the petty details of his daily life.
G. Wilson, The Life of the Honourable Henry Cavendish: Including the Abstracts of his Important Scientific Papers (1851), 186.
Science quotes on:  |  Henry Cavendish (5)  |  Universe (291)

I believe in evidence. I believe in observation, measurement, and reasoning, confirmed by independent observers. I'll believe anything, no matter how wild and ridiculous, if there is evidence for it. The wilder and more ridiculous something is, however, the firmer and more solid the evidence will have to be.
In David S. Bradford, In the Beginning: Building the Temple of Zion? (2008).
Science quotes on:  |  Belief (139)  |  Confirmation (8)  |  Evidence (83)  |  Independent (16)  |  Observation (264)  |  Reasoning (56)  |  Ridiculous (6)  |  Wild (12)

I belong to those theoreticians who know by direct observation what it means to make a measurement. Methinks it were better if there were more of them.
Referring to his laboratory experience during his assistantship in experimental physics, as quoted in Walter Moore, Schrödinger: Life and Thought (1989, 1998), 58-59. Moore describes that Schrödinger in his early days in the laboratory, “learned to believe that physics is not based upon mathematical fantasies but on a solid ground of experimental observations.”
Science quotes on:  |  Direct (9)  |  Observation (264)  |  Theoretician (5)

I have no patience with attempts to identify science with measurement, which is but one of its tools, or with any definition of the scientist which would exclude a Darwin, a Pasteur or a Kekulé. The scientist is a practical man and his are practical aims. He does not seek the ultimate but the proximate. He does not speak of the last analysis but rather of the next approximation. His are not those beautiful structures so delicately designed that a single flaw may cause the collapse of the whole. The scientist builds slowly and with a gross but solid kind of masonry. If dissatisfied with any of his work, even if it be near the very foundations, he can replace that part without damage to the remainder. On the whole, he is satisfied with his work, for while science may never be wholly right it certainly is never wholly wrong; and it seems to be improving from decade to decade.
The Anatomy of Science (1926), 6-7.
Science quotes on:  |  Analysis (82)  |  Approximation (8)  |  Collapse (8)  |  Damage (9)  |  Definition (86)  |  Dissatisfaction (2)  |  Flaw (5)  |  Foundation (31)  |  Improvement (36)  |  August Kekulé (13)  |  Masonry (2)  |  Sir Isaac Newton (176)  |  Louis Pasteur (37)  |  Practical (30)  |  Progress (200)  |  Right (49)  |  Satisfaction (31)  |  Structure (104)  |  Ultimate (27)  |  Wrong (50)

I have seen the sea lashed into fury and tossed into spray, and its grandeur moves the soul of the dullest man; but I remember that it is not the billows, but the calm level of the sea from which all heights and depths are measured.
Speech (5 Jun 1880) at the 7th Republican National Convention, Chicago to nominate John Sherman to be President. In John Tweedy, A History of the Republican National Conventions from 1856 to 1908 (1910), 191. The Convention subsequently nominated Garfield to run for President. He won the election, and was inaugurated on 4 Mar 1881.
Science quotes on:  |  Depth (10)  |  Dull (12)  |  Fury (2)  |  Grandeur (11)  |  Height (13)  |  Level (16)  |  Man (258)  |  Moving (4)  |  Remember (19)  |  Sea (57)  |  Soul (54)  |  Spray (2)

I used to measure the Heavens, now I measure the shadows of Earth. The mind belonged to Heaven, the body's shadow lies here.
Kepler's epitaph for himself.
Johannes Kepler Gesammelte Werke (1937- ), vol. 19, p. 393.
Science quotes on:  |  Body (88)  |  Earth (250)  |  Epitaph (18)  |  Heaven (55)  |  Mind (272)  |  Shadow (16)

I would by all means have men beware, lest Æsop's pretty fable of the fly that sate [sic] on the pole of a chariot at the Olympic races and said, 'What a dust do I raise,' be verified in them. For so it is that some small observation, and that disturbed sometimes by the instrument, sometimes by the eye, sometimes by the calculation, and which may be owing to some real change in the heaven, raises new heavens and new spheres and circles.
'Of Vain Glory' (1625) in James Spedding, Robert Ellis and Douglas Heath (eds.), The Works of Francis Bacon (1887-1901), Vol. 6, 503.
Science quotes on:  |  Observation (264)

If and when all the laws governing physical phenomena are finally discovered, and all the empirical constants occurring in these laws are finally expressed through the four independent basic constants, we will be able to say that physical science has reached its end, that no excitement is left in further explorations, and that all that remains to a physicist is either tedious work on minor details or the self-educational study and adoration of the magnificence of the completed system. At that stage physical science will enter from the epoch of Columbus and Magellan into the epoch of the National Geographic Magazine!
'Any Physics Tomorrow', Physics Today, January 1949, 2, 17.
Science quotes on:  |  Law (273)  |  Physicist (74)

If it can't be expressed in figures, it is not science; it is opinion.
Spoken by character Lazarus Long in Time Enough for Love (1973). In Leon E. Stover, Heinlein (1987), 103.
Science quotes on:  |  Opinion (81)

If it is possible to have a linear unit that depends on no other quantity, it would seem natural to prefer it. Moreover, a mensural unit taken from the earth itself offers another advantage, that of being perfectly analogous to all the real measurements that in ordinary usage are also made upon the earth, such as the distance between two places or the area of some tract, for example. It is far more natural in practice to refer geographical distances to a quadrant of a great circle than to the length of a pendulum.
'Histoire'. Histoire et Memoires de l'Academie Royale des Science de Paris (1788/1791), 9-10. In Charles Coulston Gillispie, Pierre-Simon Laplace, 1749-1827: A Life in Exact Science (2nd Ed., 2000), 151. by Charles Coulston Gillispie, Robert Fox
Science quotes on:  |  Definition (86)  |  Earth (250)  |  Length (5)  |  Pendulum (10)  |  Unit (15)

If someone separated the art of counting and measuring and weighing from all the other arts, what was left of each (of the others) would be, so to speak, insignificant.
Plato
Philebus 55e. Trans. R. W. Sharples.
Science quotes on:  |  Art (80)  |  Counting (4)  |  Insignificance (7)  |  Left (5)  |  Separation (23)  |  Someone (4)  |  Weight (41)

If there is an underlying oneness of all things, it does not matter where we begin, whether with stars, or laws of supply and demand, or frogs, or Napoleon Bonaparte. One measures a circle, beginning anywhere.
Lo! (1931, 1941), 8.
Science quotes on:  |  Anywhere (2)  |  Beginning (71)  |  Emperor Napoléon Bonaparte (6)  |  Circle (10)  |  Frog (24)  |  Law (273)  |  Oneness (2)  |  Star (132)  |  Underlying (4)

If we consider what science already has enabled men to know—the immensity of space, the fantastic philosophy of the stars, the infinite smallness of the composition of atoms, the macrocosm whereby we succeed only in creating outlines and translating a measure into numbers without our minds being able to form any concrete idea of it—we remain astounded by the enormous machinery of the universe.
Address (10 Sep 1934) to the International Congress of Electro-Radio Biology, Venice. In Associated Press, 'Life a Closed Book, Declares Marconi', New York Times (11 Sep 1934), 15.
Science quotes on:  |  Astounding (2)  |  Atom (164)  |  Composition (30)  |  Concrete (7)  |  Consideration (38)  |  Enormous (16)  |  Fantastic (4)  |  Formation (34)  |  Idea (226)  |  Immensity (7)  |  Infinity (44)  |  Machinery (11)  |  Mankind (111)  |  Mind (272)  |  Number (90)  |  Outline (3)  |  Philosophy (132)  |  Remaining (8)  |  Science (875)  |  Smallness (2)  |  Space (68)  |  Star (132)  |  Success (114)  |  Translation (10)  |  Universe (291)

If you cannot measure it you cannot control it.
Ray Boundy and J. Laurence Amos (eds.), A History of the Dow Chemical Physics Lab, The Freedom to Be Creative (1990), 53.

In 1905, a physicist measuring the thermal conductivity of copper would have faced, unknowingly, a very small systematic error due to the heating of his equipment and sample by the absorption of cosmic rays, then unknown to physics. In early 1946, an opinion poller, studying Japanese opinion as to who won the war, would have faced a very small systematic error due to the neglect of the 17 Japanese holdouts, who were discovered later north of Saipan. These cases are entirely parallel. Social, biological and physical scientists all need to remember that they have the same problems, the main difference being the decimal place in which they appear.
In William G. Cochran, Frederick Mosteller and John W. Tukey, 'Principles of Sampling', Journal of the American Statistical Society, 1954, 49, 31. Collected in Selected Papers of Frederick Mosteller (2006), 290.
Science quotes on:  |  Error (152)

In physical science a first essential step in the direction of learning any subject is to find principles of numerical reckoning and practicable methods for measuring some quality connected with it. I often say that when you can measure what you are speaking about, and express it in numbers, you know something about it; but when you cannot measure it, when you cannot express it in numbers, your knowledge is of a meagre and unsatisfactory kind; it may be the beginning of knowledge, but you have scarcely in your thoughts advanced to the stage of science, whatever the matter may be.
Often seen quoted in a condensed form: If you cannot measure it, then it is not science.
From lecture to the Institution of Civil Engineers, London (3 May 1883), 'Electrical Units of Measurement', Popular Lectures and Addresses (1889), Vol. 1, 80-81.

In the 1920s, there was a dinner at which the physicist Robert W. Wood was asked to respond to a toast ... "To physics and metaphysics." Now by metaphysics was meant something like philosophy—truths that you could get to just by thinking about them. Wood took a second, glanced about him, and answered along these lines: The physicist has an idea, he said. The more he thinks it through, the more sense it makes to him. He goes to the scientific literature, and the more he reads, the more promising the idea seems. Thus prepared, he devises an experiment to test the idea. The experiment is painstaking. Many possibilities are eliminated or taken into account; the accuracy of the measurement is refined. At the end of all this work, the experiment is completed and ... the idea is shown to be worthless. The physicist then discards the idea, frees his mind (as I was saying a moment ago) from the clutter of error, and moves on to something else. The difference between physics and metaphysics, Wood concluded, is that the metaphysicist has no laboratory.
In 'Wonder and Skepticism', Skeptical Enquirer (Jan-Feb 1995), 19, No. 1.
Science quotes on:  |  Account (15)  |  Accuracy (34)  |  Answer (96)  |  Completion (13)  |  Conclusion (74)  |  Devising (5)  |  Difference (135)  |  Dinner (5)  |  Elimination (14)  |  End (51)  |  Error (152)  |  Experiment (369)  |  Freeing (2)  |  Glance (2)  |  Idea (226)  |  Literature (33)  |  Metaphysics (24)  |  Mind (272)  |  Philosophy (132)  |  Physicist (74)  |  Physics (156)  |  Possibility (70)  |  Preparation (22)  |  Promise (13)  |  Reading (25)  |  Refinement (6)  |  Response (8)  |  Seeming (5)  |  Sense (104)  |  Test (46)  |  Thinking (166)  |  Toast (5)  |  Truth (450)  |  Robert W. Wood (2)  |  Work (198)  |  Worthless (8)

In the heavens we discover [stars] by their light, and by their light alone ... the sole evidence of the existence of these distant worlds ... that each of them is built up of molecules of the same kinds we find on earth. A molecule of hydrogen, for example, whether in Sirius or in Arcturus, executes its vibrations in precisely the same time. Each molecule therefore throughout the universe bears impressed upon it the stamp of a metric system as distinctly as does the metre of the Archives at Paris, or the royal cubit of the Temple of Karnac.
[Footnote: Where Maxwell uses the term “molecule” we now use the term “atom.”]
Lecture to the British Association at Bradford (1873), 'Atoms and Molecules'. Quoted by Ernest Rutherford, in 'The Constitution of Matter and the Evolution of the Elements', The Popular Science Monthly (Aug 1915), 112.
Science quotes on:  |  Atom (164)  |  Cubit (2)  |  Evidence (83)  |  Existence (150)  |  Hydrogen (25)  |  Light (117)  |  Metric System (5)  |  Spectroscopy (10)  |  Star (132)  |  Vibration (9)  |  Wavelength (5)

It can happen to but few philosophers, and but at distant intervals, to snatch a science, like Dalton, from the chaos of indefinite combination, and binding it in the chains of number, to exalt it to rank amongst the exact. Triumphs like these are necessarily 'few and far between.'
Reflections on the Decline of Science in England (1830), 22.
Science quotes on:  |  John Dalton (20)  |  Discovery (360)  |  Research (360)

It is natural for man to relate the units of distance by which he travels to the dimensions of the globe that he inhabits. Thus, in moving about the earth, he may know by the simple denomination of distance its proportion to the whole circuit of the earth. This has the further advantage of making nautical and celestial measurements correspond. The navigator often needs to determine, one from the other, the distance he has traversed from the celestial arc lying between the zeniths at his point of departure and at his destination. It is important, therefore, that one of these magnitudes should be the expression of the other, with no difference except in the units. But to that end, the fundamental linear unit must be an aliquot part of the terrestrial meridian. ... Thus, the choice of the metre was reduced to that of the unity of angles.
Lecture at the École Normale to the Year III (Apr 1795), Oeuvres Completes de Laplace (1878-1912), Vol. 14, 141. In Charles Coulston Gillispie, Dictionary of Scientific Biography (1978), Vol. 15, 335.
Science quotes on:  |  Angle (8)  |  Arc (3)  |  Celestial (5)  |  Definition (86)  |  Earth (250)  |  Meridian (2)  |  Meter (4)  |  Navigator (2)  |  Unit (15)

It is possible that the deepest meaning and aim of Newtonianism, or rather, of the whole scientific revolution of the seventeenth century, of which Newton is the heir and the highest expression, is just to abolish the world of the 'more or less', the world of qualities and sense perception, the world of appreciation of our daily life, and to replace it by the (Archimedean) universe of precision, of exact measures, of strict determination ... This revolution [is] one of the deepest, if not the deepest, mutations and transformations accomplished—or suffered—by the human mind since the invention of the cosmos by the Greeks, two thousand years before.
'The Significance of the Newtonian Synthesis' (1950). In Newtonian Studies (1965), 4-5.
Science quotes on:  |  Aristotle (101)  |  Sir Isaac Newton (176)  |  Scientific Revolution (8)  |  Transformation (27)

It is really just as bad technique to make a measurement more accurately than is necessary as it is to make it not accurately enough.
Scientific Method: An Inquiry into the Character and Validy of Natural Law (1923), 113.

It seemed as though the main framework had been put together once and for all, and that little remained to be done but to measure physical constants to the increased accuracy represented by another decimal point.
A History of Science and Its Relations with Philosophy and Religion (1931), 882.

It was a great step in science when men became convinced that, in order to understand the nature of things, they must begin by asking, not whether a thing is good or bad, noxious or beneficial, but of what kind it is? And how much is there of it? Quality and Quantity were then first recognised as the primary features to be observed in scientific inquiry.
'Address to the Mathematical and Physical Sections of the British Association, Liverpool, 15 Sep 1870', The Scientific Papers of James Clerk Maxwell (1890 edition, reprint 2003), Vol. 2, 217.
Science quotes on:  |  Beneficial (6)  |  Discovery (360)  |  Enquiry (72)  |  Experiment (369)  |  Noxious (2)  |  Quality (29)  |  Quantity (23)  |  Question (159)  |  Understanding (231)

Let him who so wishes take pleasure in boring us with all the wonders of nature: let one spend his life observing insects, another counting the tiny bones in the hearing membrane of certain fish, even in measuring, if you will, how far a flea can jump, not to mention so many other wretched objects of study; for myself, who am curious only about philosophy, who am sorry only not to be able to extend its horizons, active nature will always be my sole point of view; I love to see it from afar, in its breadth and its entirety, and not in specifics or in little details, which, although to some extent necessary in all the sciences, are generally the mark of little genius among those who devote themselves to them.
'L'Homme Plante', in Oeuvres Philosophiques de La Mettrie (1796), Vol. 2, 70-1. Jacques Roger, The Life Sciences in Eighteenth-Century French Thought, edited by Keith R. Benson and trans. Robert Ellrich (1997), 377.
Science quotes on:  |  Bone (26)  |  Ear (9)  |  Flea (6)  |  Genius (92)  |  Insect (38)  |  Nature (534)  |  Observation (264)  |  Philosophy (132)

Let us keep the discoveries and indisputable measurements of physics. But ... A more complete study of the movements of the world will oblige us, little by little, to turn it upside down; in other words, to discover that if things hold and hold together, it is only by reason of complexity, from above.
In Teilhard de Chardin and Bernard Wall (trans.), The Phenomenon of Man (1959, 2008), 43. Originally published in French as Le Phénomene Humain (1955).
Science quotes on:  |  Complete (13)  |  Complexity (51)  |  Discover (16)  |  Discovery (360)  |  Hold (21)  |  Indisputable (5)  |  Keep (9)  |  Little (29)  |  Movement (31)  |  Physics (156)  |  Reason (173)  |  Science And Religion (159)  |  Study (157)  |  Together (15)  |  Turn (22)  |  Upside-Down (2)  |  Word (97)  |  World (231)

Life through many long periods has been manifested in a countless host of varying structures, all circumscribed by one general plan, each appointed to a definite place, and limited to an appointed duration. On the whole the earth has been thus more and more covered by the associated life of plants and animals, filling all habitable space with beings capable of enjoying their own existence or ministering to the enjoyment of others; till finally, after long preparation, a being was created capable of the wonderful power of measuring and weighing all the world of matter and space which surrounds him, of treasuring up the past history of all the forms of life, and considering his own relation to the whole. When he surveys this vast and co-ordinated system, and inquires into its history and origin, can he be at a loss to decide whether it be a work of Divine thought and wisdom, or the fortunate offspring of a few atoms of matter, warmed by the anima mundi, a spark of electricity, or an accidental ray of sunshine?
Life on the Earth: Its Origin and Succession (1860), 216-7.
Science quotes on:  |  Accident (25)  |  Animal (143)  |  Appointment (3)  |  Association (8)  |  Atom (164)  |  Capability (27)  |  Coordination (4)  |  Countless (4)  |  Cover (10)  |  Decision (30)  |  Definite (5)  |  Divine (17)  |  Duration (5)  |  Earth (250)  |  Electricity (82)  |  Fill (13)  |  Fortune (15)  |  General (26)  |  Habitat (5)  |  History (156)  |  Host (3)  |  Inquiry (14)  |  Life (460)  |  Limitation (10)  |  Loss (44)  |  Manifestation (21)  |  Matter (135)  |  Offspring (6)  |  Origin (36)  |  Period (24)  |  Place (32)  |  Plan (40)  |  Plant (96)  |  Ray (19)  |  Space (68)  |  Spark (9)  |  Structure (104)  |  Survey (5)  |  System (66)  |  Thought (170)  |  Variation (34)  |  Vast (20)  |  Weight (41)  |  Wisdom (91)  |  Wonder (64)  |  Work (198)  |  World (231)

Lord Kelvin was so satisfied with this triumph of science that he declared himself to be as certain of the existence of the ether as a man can be about anything.... “When you can measure what you are speaking about, and express it in numbers, you know something about it....” Thus did Lord Kelvin lay down the law. And though quite wrong, this time he has the support of official modern Science. It is NOT true that when you can measure what you are speaking about, you know something about it. The fact that you can measure something doesn't even prove that that something exists.... Take the ether, for example: didn't they measure the ratio of its elasticity to its density?
In Science is a Sacred Cow (1950), 69-70; 85.
Science quotes on:  |  Certainty (59)  |  Density (8)  |  Ether (15)  |  Existence (150)  |  Baron William Thomson Kelvin (23)  |  Knowledge (679)  |  Law (273)  |  Number (90)  |  Proof (136)  |  Triumph (21)  |  Truth (450)

Man cannot have an effect on nature, cannot adopt any of her forces, if he does not know the natural laws in terms of measurement and numerical relations. Here also lies the strength of the national intelligence, which increases and decreases according to such knowledge. Knowledge and comprehension are the joy and justification of humanity; they are parts of the national wealth, often a replacement for the materials that nature has too sparcely dispensed. Those very people who are behind us in general industrial activity, in application and technical chemistry, in careful selection and processing of natural materials, such that regard for such enterprise does not permeate all classes, will inevitably decline in prosperity; all the more so were neighbouring states, in which science and the industrial arts have an active interrelationship, progress with youthful vigour.
Kosmos (1845), vol.1, 35. Quoted in C. C. Gillispie (ed.), Dictionary of Scientific Biography (1970), vol. 6, 552.
Science quotes on:  |  Environment (75)  |  Knowledge (679)  |  Man (258)  |  Nature (534)

Man is the measure of all things.
Protagoras, fr. 4, quoted in E. Hussey, The Pre-Socratics(1972), 109.
Science quotes on:  |  Man (258)

Measurement has too often been the leitmotif of many investigations rather than the experimental examination of hypotheses. Mounds of data are collected, which are statistically decorous and methodologically unimpeachable, but conclusions are often trivial and rarely useful in decision making. This results from an overly rigorous control of an insignificant variable and a widespread deficiency in the framing of pertinent questions. Investigators seem to have settled for what is measurable instead of measuring what they would really like to know.
'Patient Care—Mystical Research or Researchable Mystique/', Clinical Research (1964), 12, no. 4, 422.
Science quotes on:  |  Collection (26)  |  Conclusion (74)  |  Control (41)  |  Data (59)  |  Decision (30)  |  Deficiency (4)  |  Examination (47)  |  Experiment (369)  |  Hypothesis (150)  |  Insignificance (7)  |  Investigation (83)  |  Investigator (13)  |  Knowledge (679)  |  Like (14)  |  Methodology (6)  |  Question (159)  |  Rare (14)  |  Result (129)  |  Rigor (6)  |  Settle (4)  |  Statistics (82)  |  Trivial (14)  |  Usefulness (54)  |  Variable (6)  |  Widespread (4)

Men can construct a science with very few instruments, or with very plain instruments; but no one on earth could construct a science with unreliable instruments. A man might work out the whole of mathematics with a handful of pebbles, but not with a handful of clay which was always falling apart into new fragments, and falling together into new combinations. A man might measure heaven and earth with a reed, but not with a growing reed.
Heretics (1905), 146-7.
Science quotes on:  |  Mathematics (367)

No person will deny that the highest degree of attainable accuracy is an object to be desired, and it is generally found that the last advances towards precision require a greater devotion of time, labour, and expense, than those which precede them.
Reflections on the Decline of Science in England (1830), 167.

On careful examination the physicist finds that in the sense in which he uses language no meaning at all can be attached to a physical concept which cannot ultimately be described in terms of some sort of measurement. A body has position only in so far as its position can be measured; if a position cannot in principle be measured, the concept of position applied to the body is meaningless, or in other words, a position of the body does not exist. Hence if both the position and velocity of electron cannot in principle be measured, the electron cannot have the same position and velocity; position and velocity as expressions of properties which an electron can simultaneously have are meaningless.
Reflections of a Physicist (1950), 90.
Science quotes on:  |  Electron (43)  |  Language (71)

Our clocks do not measure time. ... Time is defined to be what our clocks measure.
Anonymous
Unnamed person at the National Institute of Standards and Technology in Boulder, U.S.A., quoted by Tim Folger in 'Newsflash: Time May Not Exist', Discover Magazine (Jun 2007).
Science quotes on:  |  Clock (14)  |  Time (170)

Our experience shows that not everything that is observable and measurable is predictable, no matter how complete our past observations may have been.
In Presidential Address (8 Feb 1963), Quarterly Journal of the Royal Astronomical Society (Mar 1963), 4, 197.
Science quotes on:  |  Completion (13)  |  Everything (38)  |  Experience (132)  |  Observation (264)  |  Past (42)  |  Prediction (48)

Philosophically, I liked the steady-state cosmology. So I thought that we should report our results as a simple measurement; the measurement might be true after the cosmology was no longer true!
Remarking on the measurement he made with Arno Penzias of the 3 K cosmic background radiation. From Proceedings of workshop, National Radio Astronomy Observatory, Green Bank, West Virginia (4-6 May 1983), 'Discovery of the Cosmic Microwave Background', Serendipitous Discoveries in Radio Astronomy (1983), 195. Also collected in B. Bertotti (ed.) Modern Cosmology in Retrospect (1990), 303.
Science quotes on:  |  Cosmology (11)  |  Like (14)  |  Philosophy (132)  |  Report (15)  |  Result (129)  |  Simple (25)  |  Steady-State (2)  |  Truth (450)

Refining is inevitable in science when you have made measurements of a phenomenon for a long period of time.
From interview with Henry Spall, as in an abridged version of Earthquake Information Bulletin (Jan-Feb 1980), 12, No. 1, that is on the USGS website.
Science quotes on:  |  Inevitable (5)  |  Phenomenon (114)  |  Refining (2)  |  Science (875)  |  Time (170)

Research is four things: brains with which to think, eyes with which to see, machines with which to measure, and fourth, money.
Quoted in obituary, 'Albert Szent-Gyorgyi Dead; Research Isolated Vitamin C''. Walter Sullivan, New York Times (25 Oct 1986), 9.
Science quotes on:  |  Brain (106)  |  Eye (67)  |  Machine (56)  |  Money (87)  |  Research (360)  |  See (43)  |  Thinking (166)

Scholarship, save by accident, is never the measure of a man's power.
Plain Talks on Familiar Subjects: a Series of Popular Lectures (1873), 19.
Science quotes on:  |  Accident (25)  |  Power (103)  |  Scholarship (5)

Science has taught us to think the unthinkable. Because when nature is the guide—rather than a priori prejudices, hopes, fears or desires—we are forced out of our comfort zone. One by one, pillars of classical logic have fallen by the wayside as science progressed in the 20th century, from Einstein's realization that measurements of space and time were not absolute but observer-dependent, to quantum mechanics, which not only put fundamental limits on what we can empirically know but also demonstrated that elementary particles and the atoms they form are doing a million seemingly impossible things at once.
In op-ed, 'A Universe Without Purpose', Los Angeles Times (1 Apr 2012).
Science quotes on:  |  20th Century (11)  |  A Priori (8)  |  Absolute (32)  |  Atom (164)  |  Classical (7)  |  Dependence (21)  |  Desire (46)  |  Albert Einstein (174)  |  Falling (3)  |  Fear (53)  |  Guide (17)  |  Hope (50)  |  Impossibility (32)  |  Logic (132)  |  Nature (534)  |  Observer (10)  |  Pillar (2)  |  Prejudice (31)  |  Progress (200)  |  Quantum Mechanics (15)  |  Realization (22)  |  Science (875)  |  Space And Time (4)  |  Teaching (64)  |  Thinking (166)  |  Unthinkable (2)  |  Wayside (2)

Science is measurement. If I cannot make measurements, I cannot study a problem scientifically.
In 'Musical Acoustics Today', New Scientist (1 Nov 1962), 16 No. 311, 257.
Science quotes on:  |  Problem (180)  |  Science (875)  |  Study (157)

Science that jumps to measurement too soon is as unsound as science that ignore measurement too long.
From Jacob Morton Braude, Speaker's Desk Book of Quips, Quotes, & Anecdotes (1966), 295. Also in Science Digest (1954), 36, 55.
Science quotes on:  |  Ignore (8)  |  Jump (6)  |  Long (17)  |  Science (875)  |  Soon (4)  |  Unsound (3)

Since science's competence extends to observable and measurable phenomena, not to the inner being of things, and to the means, not to the ends of human life, it would be nonsense to expect that the progress of science will provide men with a new type of metaphysics, ethics, or religion.
'Science and Ontology', Bulletin of Atomic Scientists (1949), 5, 200.
Science quotes on:  |  Competence (2)  |  Ethics (23)  |  Metaphysics (24)  |  Nonsense (13)  |  Observation (264)  |  Phenomenon (114)  |  Progress (200)  |  Religion (120)  |  Science (875)

Subatomic particles have no meaning as isolated entities, but can only be understood as interconnections between the preparation of an experiment and the subsequent measurement.
In The Tao of Physics (1975), 68.
Science quotes on:  |  Entity (7)  |  Experiment (369)  |  Interconnection (4)  |  Isolation (16)  |  Meaning (52)  |  Particle (45)  |  Preparation (22)  |  Subatomic (5)  |  Subsequent (5)  |  Understanding (231)

Such pretensions to nicety in experiments of this nature, are truly laughable! They will be telling us some day of the WEIGHT of the MOON, even to drams, scruples and grains—nay, to the very fraction of a grain!—I wish there were infallible experiments to ascertain the quantum of brains each man possesses, and every man's integrity and candour:—This is a desideratum in science which is most of all wanted.
The Death Warrant of the French Theory of Chemistry (1804), 217.
Science quotes on:  |  Brain (106)  |  Integrity (6)  |  Moon (78)

That hemisphere of the moon which faces us is better known than the earth itself; its vast desert plains have been surveyed to within a few acres; its mountains and craters have been measured to within a few yards; while on the earth's surface there are 30,000,000 square kilometres (sixty times the extent of France), upon which the foot of man has never trod, which the eye of man has never seen.
In 'Mars, by the Latest Observations', Popular Science (Dec 1873), 4, 187.
Science quotes on:  |  Acre (3)  |  Crater (6)  |  Desert (10)  |  Earth (250)  |  Eye (67)  |  Knowledge (679)  |  Man (258)  |  Moon (78)  |  Mountain (66)  |  Plain (11)  |  Surface (37)  |  Survey (5)  |  Tread (3)

The chemists work with inaccurate and poor measuring services, but they employ very good materials. The physicists, on the other hand, use excellent methods and accurate instruments, but they apply these to very inferior materials. The physical chemists combine both these characteristics in that they apply imprecise methods to impure materials.
Quoted in R. Desper, The Human Side of Scientists (1975), 116.
Science quotes on:  |  Accuracy (34)  |  Application (72)  |  Characteristic (36)  |  Chemist (49)  |  Combination (37)  |  Employment (16)  |  Excellence (18)  |  Good (81)  |  Inaccuracy (3)  |  Inferiority (4)  |  Instrument (40)  |  Material (60)  |  Method (73)  |  Physicist (74)  |  Poor (18)  |  Service (27)

The end of the eighteenth and the beginning of the nineteenth century were remarkable for the small amount of scientific movement going on in this country, especially in its more exact departments. ... Mathematics were at the last gasp, and Astronomy nearly so—I mean in those members of its frame which depend upon precise measurement and systematic calculation. The chilling torpor of routine had begun to spread itself over all those branches of Science which wanted the excitement of experimental research.
Quoted in Sophia Elizabeth De Morgan, Memoir of Augustus De Morgan (1882), 41
Science quotes on:  |  18th Century (5)  |  19th Century (8)  |  Amount (11)  |  Astronomy (105)  |  Calculation (41)  |  Chill (4)  |  Department (11)  |  Exact (16)  |  Excitement (20)  |  Experiment (369)  |  Last (13)  |  Mathematics (367)  |  Movement (31)  |  Precision (19)  |  Remarkable (14)  |  Research (360)  |  Routine (4)  |  Science (875)  |  Small (35)  |  Spread (7)  |  Systematic (7)  |  Want (32)

The farther researches we make into this admirable scene of things, the more beauty and harmony we see in them: And the stronger and clearer convictions they give us, of the being, power and wisdom of the divine Architect, who has made all things to concur with a wonderful conformity, in carrying on, by various and innumerable combinations of matter, such a circulation of causes, and effects, as was necessary to the great ends of nature. And since we are assured that the all-wise Creator has observed the most exact proportions, of number, weight and measure, in the make of all things; the most likely way therefore, to get any insight into the nature of those parts of the creation, which come within our observation, must in all reason be to number, weigh and measure. And we have much encouragement to pursue this method, of searching into the nature of things, from the great success that has attended any attempts of this kind.
Vegetable Staticks (1727), xxxi.

The first steps in the path of discovery, and the first approximate measures, are those which add most to the existing knowledge of mankind.
Reflections on the Decline of Science in England (1830), 167.
Science quotes on:  |  Discovery (360)

The inventor and the research man are confused because they both examine results of physical or chemical operations. But they are exact opposites, mirror images of one another. The research man does something and does not care [exactly] what it is that happens, he measures whatever it is. The inventor wants something to happen, but does not care how it happens or what it is that happens if it is not what he wants.
Aphorism listed Frederick Seitz, The Cosmic Inventor: Reginald Aubrey Fessenden (1866-1932) (1999), 54, being Transactions of the American Philosophical Society, Held at Philadelphia For Promoting Useful Knowledge, Vol. 86, Pt. 6.
Science quotes on:  |  Care (37)  |  Chemical (38)  |  Exactness (13)  |  Examination (47)  |  Happening (23)  |  Image (15)  |  Inventor (25)  |  Mirror (10)  |  Operation (53)  |  Opposite (21)  |  Physical (28)  |  Researcher (9)  |  Result (129)  |  Want (32)

The law of the heart is thus the same as the law of muscular tissue generally, that the energy of contraction, however measured, is a function of the length of the muscle fibre.
The Linacre Lecture on the Law of the Heart (1918), 142.
Science quotes on:  |  Contraction (6)  |  Energy (103)  |  Fibre (5)  |  Function (41)  |  Heart (46)  |  Law (273)  |  Length (5)  |  Muscle (24)  |  Tissue (15)

The more important fundamental laws and facts of physical science have all been discovered, and these are now so firmly established that the possibility of their ever being supplanted in consequence of new discoveries is exceedingly remote. Nevertheless, it has been found that there are apparent exceptions to most of these laws, and this is particularly true when the observations are pushed to a limit, i.e., whenever the circumstances of experiment are such that extreme cases can be examined. Such examination almost surely leads, not to the overthrow of the law, but to the discovery of other facts and laws whose action produces the apparent exceptions. As instances of such discoveries, which are in most cases due to the increasing order of accuracy made possible by improvements in measuring instruments, may be mentioned: first, the departure of actual gases from the simple laws of the so-called perfect gas, one of the practical results being the liquefaction of air and all known gases; second, the discovery of the velocity of light by astronomical means, depending on the accuracy of telescopes and of astronomical clocks; third, the determination of distances of stars and the orbits of double stars, which depend on measurements of the order of accuracy of one-tenth of a second-an angle which may be represented as that which a pin's head subtends at a distance of a mile. But perhaps the most striking of such instances are the discovery of a new planet or observations of the small irregularities noticed by Leverrier in the motions of the planet Uranus, and the more recent brilliant discovery by Lord Rayleigh of a new element in the atmosphere through the minute but unexplained anomalies found in weighing a given volume of nitrogen. Many other instances might be cited, but these will suffice to justify the statement that “our future discoveries must be looked for in the sixth place of decimals.”
Light Waves and Their Uses (1903), 23-4.
Science quotes on:  |  Accuracy (34)  |  Air (84)  |  Angle (8)  |  Anomaly (6)  |  Astronomy (105)  |  Atmosphere (42)  |  Circumstance (25)  |  Clock (14)  |  Decimal (8)  |  Discovery (360)  |  Element (68)  |  Examination (47)  |  Exception (16)  |  Experiment (369)  |  Fact (325)  |  Fundamental (59)  |  Gas (30)  |  Improvement (36)  |  Instrument (40)  |  Irregularity (5)  |  Law (273)  |  Limit (34)  |  Nitrogen (14)  |  Observation (264)  |  Physical Science (32)  |  Practical (30)  |  Sir John William Strutt, Lord Rayleigh (8)  |  Result (129)  |  Speed Of Light (10)  |  Star (132)  |  Telescope (44)  |  Uranus (2)  |  Urbain-Jean-Joseph Le Verrier (4)  |  Volume (5)

The most striking impression was that of an overwhelming bright light. I had seen under similar conditions the explosion of a large amount—100 tons—of normal explosives in the April test, and I was flabbergasted by the new spectacle. We saw the whole sky flash with unbelievable brightness in spite of the very dark glasses we wore. Our eyes were accommodated to darkness, and thus even if the sudden light had been only normal daylight it would have appeared to us much brighter than usual, but we know from measurements that the flash of the bomb was many times brighter than the sun. In a fraction of a second, at our distance, one received enough light to produce a sunburn. I was near Fermi at the time of the explosion, but I do not remember what we said, if anything. I believe that for a moment I thought the explosion might set fire to the atmosphere and thus finish the earth, even though I knew that this was not possible.
Enrico Fermi: Physicist (1970), 147.
Science quotes on:  |  Accommodation (4)  |  Amount (11)  |  April (3)  |  Atmosphere (42)  |  Atomic Bomb (71)  |  Brightness (5)  |  Condition (68)  |  Darkness (11)  |  Daylight (5)  |  Earth (250)  |  Explosion (10)  |  Explosive (7)  |  Enrico Fermi (11)  |  Finish (11)  |  Fire (59)  |  Flash (8)  |  Fraction (4)  |  Impression (32)  |  Light (117)  |  Overwhelming (10)  |  Possibility (70)  |  Second (8)  |  Sky (32)  |  Spectacle (4)  |  Test (46)

The progress of science is often affected more by the frailties of humans and their institutions than by the limitations of scientific measuring devices. The scientific method is only as effective as the humans using it. It does not automatically lead to progress.
Chemistry (1989), 6.
Science quotes on:  |  Automatic (8)  |  Device (15)  |  Effective (9)  |  Human (168)  |  Institution (15)  |  Limitation (10)  |  Progress (200)  |  Science (875)  |  Scientific Method (101)

The radiation of radium was “contagious”—Contagious like a persistent scent or a disease. It was impossible for an object, a plant, an animal or a person to be left near a tube of radium without immediately acquiring a notable “activity” which a sensitive apparatus could detect.
Eve Curie
In Eve Curie, Madame Curie: a Biography by Eve Curie (1937, 2007), 196.
Science quotes on:  |  Activity (48)  |  Animal (143)  |  Apparatus (18)  |  Contagious (3)  |  Disease (170)  |  Impossibility (32)  |  Object (47)  |  Persistence (10)  |  Person (38)  |  Plant (96)  |  Radiation (13)  |  Radioactivity (21)  |  Radium (13)  |  Scent (3)

The saying often quoted from Lord Kelvin… that 'where you cannot measure your knowledge is meagre and unsatisfactory,' as applied in mental and social science, is misleading and pernicious. This is another way of saying that these sciences are not science in the sense of physical science and cannot attempt to be such without forfeiting their proper nature and function. Insistence on a concretely quantitative economics means the use of statistics of physical magnitudes, whose economic meaning and significance is uncertain and dubious. (Even wheat is approximately homogeneous only if measured in economic terms.) And a similar statement would even apply more to other social sciences. In this field, the Kelvin dictum very largely means in practice, 'if you cannot measure, measure anyhow!'
'What is Truth' in Economics? (1956), 166.
Science quotes on:  |  Economics (19)  |  Baron William Thomson Kelvin (23)  |  Social Science (17)

The science of genetics is in a transition period, becoming an exact science just as the chemistry in the times of Lavoisier, who made the balance an indispensable implement in chemical research.
The Genotype Conception of Heredity', The American Naturalist (1911), 45, 131.
Science quotes on:  |  Genetics (79)  |  Antoine-Laurent Lavoisier (26)  |  Research (360)

The science of the geologist seems destined to exert a marked influence on that of the natural theologian... Not only—to borrow from Paley's illustration—does it enable him to argue on the old grounds, from the contrivance exhibited in the watch found on the moor, that the watch could not have lain upon the moor for ever; but it establishes further, on different and more direct evidence, that there was a time when absolutely the watch was not there; nay, further, so to speak, that there was a previous time in which no watches existed at all, but only water-clocks; yet further, that there was at time in which there we not even water-clocks, but only sun-dials; and further, an earlier time still in which sun-dials were not, nor an measurers of time of any kind.
Lecture to the Edinburgh Philosophical Institution, 'Geology in its Bearings on the Two Theologies, Part 1', collected in The Testimony of the Rocks: or, Geology in Its Bearings on the Two Theologies, Natural and Revealed (1857), 211.
Science quotes on:  |  Clock (14)  |  Contrivance (6)  |  Destiny (12)  |  Era (6)  |  Evidence (83)  |  Geologist (26)  |  Influence (47)  |  William Paley (6)  |  Theologian (11)  |  Time (170)  |  Watch (16)

The strength and weakness of physicists is that we believe in what we can measure. And if we can't measure it, then we say it probably doesn't exist. And that closes us off to an enormous amount of phenomena that we may not be able to measure because they only happened once. For example, the Big Bang. ... That's one reason why they scoffed at higher dimensions for so many years. Now we realize that there's no alternative...
Quoted in Nina L. Diamond, Voices of Truth (2000), 333-334.
Science quotes on:  |  Big Bang (24)  |  Hyperspace (2)  |  Physicist (74)

The truth us that other systems of geometry are possible, yet after all, these other systems are not spaces but other methods of space measurements. There is one space only, though we may conceive of many different manifolds, which are contrivances or ideal constructions invented for the purpose of determining space.
In Science (1903), 18, 106. In Robert Édouard Moritz, Memorabilia Mathematica (1914), 352.
Science quotes on:  |  Construction (36)  |  Contrivance (6)  |  Determine (15)  |  Different (15)  |  Geometry (68)  |  Ideal (26)  |  Invention (174)  |  Manifold (4)  |  Possibility (70)  |  Purpose (66)  |  Space (68)  |  System (66)  |  Truth (450)

The velocity of light is one of the most important of the fundamental constants of Nature. Its measurement by Foucault and Fizeau gave as the result a speed greater in air than in water, thus deciding in favor of the undulatory and against the corpuscular theory. Again, the comparison of the electrostatic and the electromagnetic units gives as an experimental result a value remarkably close to the velocity of light–a result which justified Maxwell in concluding that light is the propagation of an electromagnetic disturbance. Finally, the principle of relativity gives the velocity of light a still greater importance, since one of its fundamental postulates is the constancy of this velocity under all possible conditions.
Studies in Optics (1927), 120.
Science quotes on:  |  Air (84)  |  Conclusion (74)  |  Condition (68)  |  Constancy (4)  |  Constant (14)  |  Corpuscle (5)  |  Electrostatic (2)  |  Experiment (369)  |  Jean-Bernard-Léon Foucault (3)  |  Fundamental (59)  |  Importance (106)  |  James Clerk Maxwell (63)  |  Postulate (19)  |  Principle (97)  |  Propagation (7)  |  Relativity (33)  |  Result (129)  |  Speed Of Light (10)  |  Theory (353)  |  Unit (15)  |  Water (122)  |  Wave (32)

The wonder is, not that the field of the stars is so vast, but that man has measured it.
The Garden of Epicurus (1894) translated by Alfred Allinson, in The Works of Anatole France in an English Translation (1920), 16.
Science quotes on:  |  Star (132)  |  Vast (20)  |  Wonder (64)

There have been many authorities who have asserted that the basis of science lies in counting or measuring, i.e. in the use of mathematics. Neither counting nor measuring can however be the most fundamental processes in our study of the material universe—before you can do either to any purpose you must first select what you propose to count or measure, which presupposes a classification.
Classification and Biology (1970), 2.
Science quotes on:  |  Classification (56)  |  Mathematics (367)

There is no instrument for measuring the pressure of the Ether, which is probably millions of times greater: it is altogether too uniform for direct apprehension. A deep-sea fish has probably no means of apprehending the existence of water, it is too uniformly immersed in it: and that is our condition in regard to the Ether.
Ether and Reality: A Series of Discourses on the Many Functions of the Ether of Space (1925), 28.
Science quotes on:  |  Continuity (17)  |  Ether (15)  |  Fish (33)  |  Instrument (40)  |  Sea (57)  |  Water (122)

There is nothing new to be discovered in physics now. All that remains is more and more precise measurement.
Webmaster has searched for a primary print source without success. Walter Isaacson likewise found no direct evidence, as he reports in Einstein (2007), 575. However, these sentences are re-quoted in a variety of books and other sources (often citing them as a remark reportedly made by Kelvin in an Address at the British Association for the Advancement of Science in 1900). Although the quote appears noteworthy, it is not included in the major biographical work, the two volumes by Silvanus P. Thomson, The Life of Lord Kelvin (1976). The quote is included here so that this caveat should be read with it.
Science quotes on:  |  Discovery (360)  |  New (107)  |  Nothing (89)  |  Precision (19)

Think of the image of the world in a convex mirror. ... A well-made convex mirror of moderate aperture represents the objects in front of it as apparently solid and in fixed positions behind its surface. But the images of the distant horizon and of the sun in the sky lie behind the mirror at a limited distance, equal to its focal length. Between these and the surface of the mirror are found the images of all the other objects before it, but the images are diminished and flattened in proportion to the distance of their objects from the mirror. ... Yet every straight line or plane in the outer world is represented by a straight line or plane in the image. The image of a man measuring with a rule a straight line from the mirror, would contract more and more the farther he went, but with his shrunken rule the man in the image would count out exactly the same results as in the outer world, all lines of sight in the mirror would be represented by straight lines of sight in the mirror. In short, I do not see how men in the mirror are to discover that their bodies are not rigid solids and their experiences good examples of the correctness of Euclidean axioms. But if they could look out upon our world as we look into theirs without overstepping the boundary, they must declare it to be a picture in a spherical mirror, and would speak of us just as we speak of them; and if two inhabitants of the different worlds could communicate with one another, neither, as far as I can see, would be able to convince the other that he had the true, the other the distorted, relation. Indeed I cannot see that such a question would have any meaning at all, so long as mechanical considerations are not mixed up with it.
In 'On the Origin and Significance of Geometrical Axioms,' Popular Scientific Lectures< Second Series (1881), 57-59. In Robert Édouard Moritz, Memorabilia Mathematica (1914), 357-358.
Science quotes on:  |  Axiom (11)  |  Behind (4)  |  Boundary (10)  |  Convex (2)  |  Distortion (4)  |  Euclid (24)  |  Experience (132)  |  Horizon (5)  |  Image (15)  |  Inhabitant (7)  |  Line (18)  |  Mirror (10)  |  Object (47)  |  Solid (14)  |  Surface (37)  |  World (231)

This characteristic of modern experiments–that they consist principally of measurements,–is so prominent, that the opinion seems to have got abroad, that in a few years all the great physical constants will have been approximately estimated, and that the only occupation which will then be left to men of science will be to carry these measurements to another place of decimals ... But we have no right to think thus of the unsearchable riches of creation, or of the untried fertility of those fresh minds into which these riches will continue to be poured.
[Maxwell strongly disagreed with the prominent opinion, and was attacking it. Thus, he was saying he did not believe in such a future of merely making 'measurements to another place of decimals.']
'Introductory Lecture on Experimental Physics', Oct 1871. In W. D. Niven (ed.), Scientific Papers (1890), Vol. 2, 244. Note that his reference to making measurements to another place of decimals is often seen extracted as a short quote without the context showing he actually despised that opinion.
Science quotes on:  |  Characteristic (36)  |  Creativity (45)  |  Decimal (8)  |  Experiment (369)  |  Mind (272)  |  Occupation (28)  |  Research (360)  |  Riches (5)

This king [Sesostris] divided the land among all Egyptians so as to give each one a quadrangle of equal size and to draw from each his revenues, by imposing a tax to be levied yearly. But everyone from whose part the river tore anything away, had to go to him to notify what had happened; he then sent overseers who had to measure out how much the land had become smaller, in order that the owner might pay on what was left, in proportion to the entire tax imposed. In this way, it appears to me, geometry originated, which passed thence to Hellas.
Heroditus
(II. c. 109) As quoted in Florian Cajori, A History of Elementary Mathematics (1893), 10, footnoted to C.A. Bretschneider, Die Geometrie und die Geometer vor Eukides (1870). Note that the word geometry itself means “land measurement.”
Science quotes on:  |  Division (19)  |  Egypt (12)  |  Geometry (68)  |  Land (27)  |  Nomenclature (102)  |  Payment (4)  |  Proportion (24)  |  Revenue (2)  |  River (34)  |  Tax (13)

Those who are unacquainted with the details of scientific investigation have no idea of the amount of labour expended in the determination of those numbers on which important calculations or inferences depend. They have no idea of the patience shown by a Berzelius in determining atomic weights; by a Regnault in determining coefficients of expansion; or by a Joule in determining the mechanical equivalent of heat.
In Sound: A Course of Eight Lectures Delivered at the Royal Institution of Great Britain (1867), 26.
Science quotes on:  |  Atomic Weight (5)  |  Jöns Jacob Berzelius (11)  |  Calculation (41)  |  Depend (9)  |  Detail (33)  |  Determination (37)  |  Expansion (18)  |  Important (20)  |  Inference (16)  |  Investigation (83)  |  James Prescott Joule (7)  |  Labor (18)  |  Number (90)  |  Patience (16)  |  Research (360)  |  Scientific (55)

Those who think 'Science is Measurement' should search Darwin's works for numbers and equations.
'David H. Hubel', in Larry R. Squire (ed.), The History of Neuroscience in Autobiography (1996), Vol. 1, 313.
Science quotes on:  |  Charles Darwin (216)  |  Equation (46)  |  Number (90)  |  Science (875)

Thou shalt not have in thy bag divers weights, a great and a small. Thou shalt not have in thine house divers measures, a great and a small. But thou shalt have a perfect and just weight, a perfect and just measure shalt thou have.
Bible
Book of Deuteronomy.
Science quotes on:  |  Diverse (3)  |  Weight (41)

Though he may not always recognise his bondage, modern man lives under a tyranny of numbers.
The Tyranny of Numbers; Mismeasurement and Misrule (1995), 1.

Time, which measures everything in our idea, and is often deficient to our schemes, is to nature endless and as nothing; it cannot limit that by which alone it had existence; and as the natural course of time, which to us seems infinite, cannot be bounded by any operation that may have an end, the progress of things upon this globe, that is, the course of nature, cannot be limited by time, which must proceed in a continual succession.
'Theory of the Earth', Transactions of the Royal Society of Edinburgh (1788), 1, 215.
Science quotes on:  |  Existence (150)  |  Infinite (39)  |  Time (170)

To see every day how people get the name ‘genius' just as the wood-lice in the cellar the name ‘millipede'—not because they have that many feet, but because most people don't want to count to 14—this has had the result that I don't believe anyone any more without checking.
Lichtenberg: Aphorisms & Letters (1969), 48, translated by Franz H. Mautner and Henry Hatfield.
Science quotes on:  |  Believe (14)  |  Count (15)  |  Feet (5)  |  Genius (92)  |  Insect (38)  |  Truth (450)

To understand God's thoughts, one must study statistics, for these are the measure of His purpose.
Nightingale held this belief, here expressed in the words written by Karl Pearson in The Life, Letters and Labours of Francis Galton (1924), Vol 2, 415.
Science quotes on:  |  God (234)  |  Purpose (66)  |  Statistics (82)  |  Study (157)  |  Thought (170)  |  Understanding (231)

Uniformity in the currency, weights, and measures of the United States is an object of great importance, and will, I am persuaded, be duly attended to.
First Annual Message to Congress on the State of the Union (8 Jan 1790).
Science quotes on:  |  Importance (106)  |  United States (12)

We are apt to think we know what time is because we can measure it, but no sooner do we reflect upon it than that illusion goes. So it appears that the range of the measureable is not the range of the knowable. There are things we can measure, like time, but yet our minds do not grasp their meaning. There are things we cannot measure, like happiness or pain, and yet their meaning is perfectly clear to us.
The Elements of Social Science (1921), 15-16
Science quotes on:  |  Clear (9)  |  Happiness (58)  |  Knowledge (679)  |  Meaning (52)  |  Mind (272)  |  Pain (49)  |  Time (170)

We find no sense in talking about something unless we specify how we measure it; a definition by the method of measuring a quantity is the one sure way of avoiding talking nonsense...
in Relativity and Common Sense (1964)

We have reason not to be afraid of the machine, for there is always constructive change, the enemy of machines, making them change to fit new conditions.
We suffer not from overproduction but from undercirculation. You have heard of technocracy. I wish I had those fellows for my competitors. I'd like to take the automobile it is said they predicted could be made now that would last fifty years. Even if never used, this automobile would not be worth anything except to a junkman in ten years, because of the changes in men's tastes and ideas. This desire for change is an inherent quality in human nature, so that the present generation must not try to crystallize the needs of the future ones.
We have been measuring too much in terms of the dollar. What we should do is think in terms of useful materials—things that will be of value to us in our daily life.
In 'Quotation Marks: Against Technocracy', New York Times (1 Han 1933), E4.
Science quotes on:  |  Afraid (7)  |  Automobile (11)  |  Change (133)  |  Circulation (12)  |  Competitor (2)  |  Condition (68)  |  Construction (36)  |  Daily Life (3)  |  Desire (46)  |  Doing (26)  |  Dollar (11)  |  Enemy (26)  |  Fifty (4)  |  Future (110)  |  Generation (56)  |  Human Nature (34)  |  Idea (226)  |  Inherent (17)  |  Junk (2)  |  Machine (56)  |  Need (57)  |  New (107)  |  Prediction (48)  |  Present (36)  |  Production (72)  |  Quality (29)  |  Reason (173)  |  Suffering (20)  |  Taste (16)  |  Ten (3)  |  Term (34)  |  Thinking (166)  |  Use (54)  |  Usefulness (54)  |  Value (63)  |  Wish (18)  |  Worth (30)  |  Year (69)

We never really see time. We see only clocks. If you say this object moves, what you really mean is that this object is here when the hand of your clock is here, and so on. We say we measure time with clocks, but we see only the hands of the clocks, not time itself. And the hands of a clock are a physical variable like any other. So in a sense we cheat because what we really observe are physical variables as a function of other physical variables, but we represent that as if everything is evolving in time.
Quoted by Tim Folger in 'Newsflash: Time May Not Exist', Discover Magazine (Jun 2007).
Science quotes on:  |  Clock (14)  |  Movement (31)  |  Time (170)  |  Variable (6)

When one studies strongly radioactive substances special precautions must be taken if one wishes to be able to take delicate measurements. The various objects used in a chemical laboratory and those used in a chemical laboratory, and those which serve for experiments in physics, become radioactive in a short time and act upon photographic plates through black paper. Dust, the air of the room, and one's clothes all become radioactive.
Notebook entry. In Eve Curie, Madame Curie: a Biography by Eve Curie (1937, 2007), 196.
Science quotes on:  |  Apparatus (18)  |  Chemistry (143)  |  Clothes (4)  |  Delicate (6)  |  Equipment (11)  |  Photography (5)  |  Physics (156)  |  Precaution (2)  |  Radioactivity (21)  |  Special (25)  |  Study (157)

When young Galileo, then a student at Pisa, noticed one day during divine service a chandelier swinging backwards and forwards, and convinced himself, by counting his pulse, that the duration of the oscillations was independent of the arc through which it moved, who could know that this discovery would eventually put it in our power, by means of the pendulum, to attain an accuracy in the measurement of time till then deemed impossible, and would enable the storm-tossed seaman in the most distant oceans to determine in what degree of longitude he was sailing?
Hermann von Helmholtz, Edmund Atkinson (trans.), Popular Lectures on Scientific Subjects: First Series (1883), 29.
Science quotes on:  |  Accuracy (34)  |  Church (16)  |  Discovery (360)  |  Galileo Galilei (64)  |  Independent (16)  |  Longitude (3)  |  Oscillation (3)  |  Pendulum (10)  |  Seaman (2)  |  Swing (5)  |  Time (170)

Whenever you can, count.
Quoted in James R. Newman, Commentary on Sir Francis Galton (1956), 1169.
Science quotes on:  |  Statistics (82)

You, in this country [the USA], are subjected to the British insularity in weights and measures; you use the foot, inch and yard. I am obliged to use that system, but must apologize to you for doing so, because it is so inconvenient, and I hope Americans will do everything in their power to introduce the French metrical system. ... I look upon our English system as a wickedly, brain-destroying system of bondage under which we suffer. The reason why we continue to use it, is the imaginary difficulty of making a change, and nothing else; but I do not think in America that any such difficulty should stand in the way of adopting so splendidly useful a reform.
Journal of the Franklin Institute, Nov 1884, 118, 321-341
Science quotes on:  |  Metric System (5)

[In plotting earthquake measurements] the range between the largest and smallest magnitudes seemed unmanageably large. Dr. Beno Gutenberg then made the natural suggestion to plot the amplitudes logarithmically.
From interview with Henry Spall, as in an abridged version of Earthquake Information Bulletin (Jan-Feb 1980), 12, No. 1, that is on the USGS website.
Science quotes on:  |  Earthquake (18)  |  Beno Gutenberg (2)  |  Large (22)  |  Largest (4)  |  Magnitude (14)  |  Natural (48)  |  Plot (2)  |  Plotting (2)  |  Range (12)  |  Suggestion (13)

[Louis Rendu, Bishop of Annecy] collects observations, makes experiments, and tries to obtain numerical results; always taking care, however, so to state his premises and qualify his conclusions that nobody shall be led to ascribe to his numbers a greater accuracy than they merit. It is impossible to read his work, and not feel that he was a man of essentially truthful mind and that science missed an ornament when he was appropriated by the Church.
In The Glaciers of the Alps (1860), 299.
Science quotes on:  |  Accuracy (34)  |  Appropriation (2)  |  Ascribe (6)  |  Care (37)  |  Church (16)  |  Collection (26)  |  Conclusion (74)  |  Essential (41)  |  Experiment (369)  |  Impossibility (32)  |  Merit (14)  |  Mind (272)  |  Miss (5)  |  Number (90)  |  Observation (264)  |  Ornament (9)  |  Premise (7)  |  Qualification (5)  |  Read (32)  |  Louis le Chanoine Rendu (2)  |  Result (129)  |  Science (875)  |  Science And Religion (159)  |  Statement (28)  |  Truth (450)  |  Work (198)

[W]e are prone to forget that the planet may be measured by man, but not according to man.
The Face of the Earth (1904), Vol. 1, 17.
Science quotes on:  |  According (7)  |  Forgetting (8)  |  Man (258)  |  Planet (84)  |  Prone (4)


Carl Sagan Thumbnail In science it often happens that scientists say, 'You know that's a really good argument; my position is mistaken,' and then they would actually change their minds and you never hear that old view from them again. They really do it. It doesn't happen as often as it should, because scientists are human and change is sometimes painful. But it happens every day. I cannot recall the last time something like that happened in politics or religion. (1987) -- Carl Sagan
Quotations by:Albert EinsteinIsaac NewtonLord KelvinCharles DarwinSrinivasa RamanujanCarl SaganFlorence NightingaleThomas EdisonAristotleMarie CurieBenjamin FranklinWinston ChurchillGalileo GalileiSigmund FreudRobert BunsenLouis PasteurTheodore RooseveltAbraham LincolnRonald ReaganLeonardo DaVinciMichio KakuKarl PopperJohann GoetheRobert OppenheimerCharles Kettering  ... (more people)

Quotations about:Atomic  BombBiologyChemistryDeforestationEngineeringAnatomyAstronomyBacteriaBiochemistryBotanyConservationDinosaurEnvironmentFractalGeneticsGeologyHistory of ScienceInventionJupiterKnowledgeLoveMathematicsMeasurementMedicineNatural ResourceOrganic ChemistryPhysicsPhysicianQuantum TheoryResearchScience and ArtTeacherTechnologyUniverseVolcanoVirusWind PowerWomen ScientistsX-RaysYouthZoology  ... (more topics)
Sitewide search within all Today In Science History pages:
Custom Quotations Search - custom search within only our quotations pages:
Visit our Science and Scientist Quotations index for more Science Quotes from archaeologists, biologists, chemists, geologists, inventors and inventions, mathematicians, physicists, pioneers in medicine, science events and technology.

Names index: | A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z |

Categories index: | 1 | 2 | A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z |
Author Icon
who invites your feedback

Today in Science History

Most Popular

Thank you for sharing.
Today in Science History
Sign up for Newsletter
with quiz, quotes and more.
- 100 -
Sophie Germain
Gertrude Elion
Ernest Rutherford
James Chadwick
Marcel Proust
William Harvey
Johann Goethe
John Keynes
Carl Gauss
Paul Feyerabend
- 90 -
Antoine Lavoisier
Lise Meitner
Charles Babbage
Ibn Khaldun
Euclid
Ralph Emerson
Robert Bunsen
Frederick Banting
Andre Ampere
Winston Churchill
- 80 -
John Locke
Bronislaw Malinowski
Bible
Thomas Huxley
Alessandro Volta
Erwin Schrodinger
Wilhelm Roentgen
Louis Pasteur
Bertrand Russell
Jean Lamarck
- 70 -
Samuel Morse
John Wheeler
Nicolaus Copernicus
Robert Fulton
Pierre Laplace
Humphry Davy
Thomas Edison
Lord Kelvin
Theodore Roosevelt
Carolus Linnaeus
- 60 -
Francis Galton
Linus Pauling
Immanuel Kant
Martin Fischer
Robert Boyle
Karl Popper
Paul Dirac
Avicenna
James Watson
William Shakespeare
- 50 -
Stephen Hawking
Niels Bohr
Nikola Tesla
Rachel Carson
Max Planck
Henry Adams
Richard Dawkins
Werner Heisenberg
Alfred Wegener
John Dalton
- 40 -
Pierre Fermat
Edward Wilson
Johannes Kepler
Gustave Eiffel
Giordano Bruno
JJ Thomson
Thomas Kuhn
Leonardo DaVinci
Archimedes
David Hume
- 30 -
Andreas Vesalius
Rudolf Virchow
Richard Feynman
James Hutton
Alexander Fleming
Emile Durkheim
Benjamin Franklin
Robert Oppenheimer
Robert Hooke
Charles Kettering
- 20 -
Carl Sagan
James Maxwell
Marie Curie
Rene Descartes
Francis Crick
Hippocrates
Michael Faraday
Srinivasa Ramanujan
Francis Bacon
Galileo Galilei
- 10 -
Aristotle
John Watson
Rosalind Franklin
Michio Kaku
Isaac Asimov
Charles Darwin
Sigmund Freud
Albert Einstein
Florence Nightingale
Isaac Newton