TODAY IN SCIENCE HISTORY ®  •  TODAYINSCI ®
Celebrating 24 Years on the Web
Find science on or your birthday

Today in Science History - Quickie Quiz
Who said: “The conservation of natural resources is the fundamental problem. Unless we solve that problem it will avail us little to solve all others.”
more quiz questions >>
Home > Category Index for Science Quotations > Category Index M > Category: Mixture

Mixture Quotes (44 quotes)

[On Oxygen, Chlorine, Iodine, Fluorine:] The most important division of ponderable substances seems to be that which represents their electrical energies or their respective inherent states. When the poles of a voltaic apparatus are introduced into a mixture of the simple substances, it is found that four of them go to the positive, while the rest evince their state by passing to the negative pole. As this division coincides with one resulting from a consideration of their most important properties, it is that which I shall adopt as the first.
From 5th Lecture in 1816, in Bence Jones, The Life and Letters of Faraday (1870), Vol. 1, 217-218.
Science quotes on:  |  Adopt (22)  |  Apparatus (70)  |  Chlorine (15)  |  Consideration (143)  |  Division (67)  |  Electrical (57)  |  First (1302)  |  Fluorine (5)  |  Importance (299)  |  Inherent (43)  |  Introduce (63)  |  Iodine (7)  |  Most (1728)  |  Negative (66)  |  Oxygen (77)  |  Passing (76)  |  Polarity (5)  |  Pole (49)  |  Ponderable (4)  |  Positive (98)  |  Property (177)  |  Represent (157)  |  Rest (287)  |  Simple (426)  |  State (505)  |  Substance (253)  |  Voltaic (9)

[Regarding evolution believers:] Their business is not with the possible, but the actual—not with a world which might be, but with a world that is. This they explore with a courage not unmixed with reverence, and according to methods which, like the quality of a tree, are tested by their fruits. They have but one desire—to know the truth. They have but one fear—to believe a lie.
'Scientific Use of the Imagination', Discourse Delivered Before the British Association at Liverpool, (16 Sep 1870). Fragments of Science for Unscientific People: A Series of Detached Essays, Lectures, and Reviews (1892), Vol. 2, 134.
Science quotes on:  |  Accord (36)  |  According (236)  |  Actual (118)  |  Actuality (6)  |  Believer (26)  |  Business (156)  |  Courage (82)  |  Desire (212)  |  Evolution (635)  |  Exploration (161)  |  Fear (212)  |  Fruit (108)  |  Know (1538)  |  Lie (370)  |  Method (531)  |  Possibility (172)  |  Possible (560)  |  Quality (139)  |  Reverence (29)  |  Test (221)  |  Tree (269)  |  Truth (1109)  |  World (1850)

[This] may prove to be the beginning of some embracing generalization, which will throw light, not only on radioactive processes, but on elements in general and the Periodic Law.... Chemical homogeneity is no longer a guarantee that any supposed element is not a mixture of several of different atomic weights, or that any atomic weight is not merely a mean number.
From Chemical Society's Annual Reports (1910), Vol. 7, 285. As quoted in Francis Aston in Lecture (1936) on 'Forty Years of Atomic Theory', collected in Needham and Pagel (eds.) in Background to Modern Science: Ten Lectures at Cambridge Arranged by the History of Science Committee, (1938), 100. Cited in Alfred Walter Stewart, Recent Advances in Physical and Inorganic Chemistry (1920), 198.
Science quotes on:  |  Atomic Weight (6)  |  Beginning (312)  |  Chemical (303)  |  Different (595)  |  Discovery (837)  |  Element (322)  |  General (521)  |  Generalization (61)  |  Guarantee (30)  |  Homogeneity (9)  |  Isotope (4)  |  Law (913)  |  Light (635)  |  Mean (810)  |  Merely (315)  |  Number (710)  |  Periodic Law (6)  |  Periodic Table (19)  |  Process (439)  |  Prove (261)  |  Radioactive (24)  |  Several (33)  |  Supposed (5)  |  Weight (140)  |  Will (2350)

[With] our critical faculties in decline, unable to distinguish between what feels good and what’s true, we slide, almost without noticing, back into superstition. … We have also arranged things so that almost no one understands science and technology. We might get away with it for a while, but eventually this combustible mixture of ignorance and power is going to blow up in our faces.
In 'With Science on Our Side', Washington Post (9 Jan 1994).
Science quotes on:  |  Arranged (4)  |  Back (395)  |  Blow (45)  |  Blow Up (8)  |  Combustible (2)  |  Critical (73)  |  Decline (28)  |  Distinguish (168)  |  Eventual (9)  |  Eventually (64)  |  Face (214)  |  Feel (371)  |  Good (906)  |  Ignorance (254)  |  Power (771)  |  Science And Technology (46)  |  Slide (5)  |  Superstition (70)  |  Technology (281)  |  Thing (1914)  |  True (239)  |  Understand (648)

1. Universal CHEMISTRY is the Art of resolving mixt, compound, or aggregate Bodies into their Principles; and of composing such Bodies from those Principles. 2. It has for its Subject all the mix’d, compound, and aggregate Bodies that are and resolvable and combinable and Resolution and Combination, or Destruction and Generation, for its Object. 3. Its Means in general, are either remote or immediate; that is, either Instruments or the Operations themselves. 4. Its End is either philosophical and theoretical; or medicinal, mechanical, œconomical, and practical. 5. Its efficient Cause is the Chemist.
In Philosophical Principles of Universal Chemistry: Or, The Foundation of a Scientifical Manner of Inquiring Into and Preparing the Natural and Artificial Bodies for the Uses of Life: Both in the Smaller Way of Experiment, and the Larger Way of Business (1730), 1. Footnote to (1.): “The justness of this Definition will appear from the scope and tenour of the Work; though it is rather adapted to the perfect, than the present imperfect state of Chemistry….” Footnote to (4): “Hence universal Chemistry is commodiously resolved into several Parts or Branches, under which it must be distinctly treated to give a just notion of its due extent and usefulness. For tho’ in common acceptation of the word, Chemistry is supposed to relate chiefly to the Art of Medicine, as it supplies that Art with Remedies, this in reality is but a very small part of its use, compared with the rest; numerous other Arts, Trades, and mechanical Employments, Merchandize itself, and all natural Philosophy, being as much, and some of them more, concern’d therewith….”
Science quotes on:  |  Aggregate (24)  |  Art (680)  |  Body (557)  |  Cause (561)  |  Chemist (169)  |  Chemistry (376)  |  Combination (150)  |  Compose (20)  |  Compound (117)  |  Destruction (135)  |  Economical (11)  |  Efficient (34)  |  End (603)  |  General (521)  |  Generation (256)  |  Immediate (98)  |  Instrument (158)  |  Means (587)  |  Mechanical (145)  |  Medicinal (3)  |  Object (438)  |  Operation (221)  |  Philosophical (24)  |  Practical (225)  |  Principle (530)  |  Remote (86)  |  Resolution (24)  |  Subject (543)  |  Theoretical (27)  |  Universal (198)

Adam, the first man, didn’t know anything about the nucleus but Dr. George Gamow, visiting professor from George Washington University, pretends he does. He says for example that the nucleus is 0.00000000000003 feet in diameter. Nobody believes it, but that doesn't make any difference to him.
He also says that the nuclear energy contained in a pound of lithium is enough to run the United States Navy for a period of three years. But to get this energy you would have to heat a mixture of lithium and hydrogen up to 50,000,000 degrees Fahrenheit. If one has a little stove of this temperature installed at Stanford, it would burn everything alive within a radius of 10,000 miles and broil all the fish in the Pacific Ocean.
If you could go as fast as nuclear particles generally do, it wouldn’t take you more than one ten-thousandth of a second to go to Miller's where you could meet Gamow and get more details.
'Gamow interviews Gamow' Stanford Daily, 25 Jun 1936. In Helge Kragh, Cosmology and Controversy: The Historica1 Development of Two Theories of the Universe (1996), 90.
Science quotes on:  |  Alive (97)  |  Burn (99)  |  Degree (277)  |  Detail (150)  |  Diameter (28)  |  Difference (355)  |  Do (1905)  |  Energy (373)  |  Enough (341)  |  Everything (489)  |  First (1302)  |  Fish (130)  |  Fusion (16)  |  Heat (180)  |  Hydrogen (80)  |  Know (1538)  |  Lithium (3)  |  Little (717)  |  Man (2252)  |  More (2558)  |  Nobody (103)  |  Nuclear (110)  |  Nuclear Energy (18)  |  Nuclear Power (16)  |  Nucleus (54)  |  Ocean (216)  |  Pacific Ocean (5)  |  Particle (200)  |  Period (200)  |  Professor (133)  |  Run (158)  |  Say (989)  |  State (505)  |  Temperature (82)  |  University (130)  |  Year (963)

As I am writing, another illustration of ye generation of hills proposed above comes into my mind. Milk is as uniform a liquor as ye chaos was. If beer be poured into it & ye mixture let stand till it be dry, the surface of ye curdled substance will appear as rugged & mountanous as the Earth in any place.
Letter to Thomas Burnet (Jan 1680/1. In H. W. Turnbull (ed.), The Correspondence of Isaac Newton, 1676-1687 (1960), Vol. 2, 334.
Science quotes on:  |  Beer (10)  |  Chaos (99)  |  Dry (65)  |  Earth (1076)  |  Generation (256)  |  Hill (23)  |  Illustration (51)  |  Milk (23)  |  Mind (1377)  |  Mountain (202)  |  Rugged (7)  |  Stand (284)  |  Substance (253)  |  Surface (223)  |  Will (2350)  |  Writing (192)

Blood mixture and the result drop in the racial level is the sole cause of the dying out of old cultures; for men do not perish as a result of lost wars, but by the loss of that force of resistance which is continued only in pure blood. All who are not of good race in this world are chaff.
Mein Kampf (1925-26), American Edition (1943), 296. In William Lawrence Shirer, The Rise and Fall of the Third Reich (1990), 88.
Science quotes on:  |  Blood (144)  |  Cause (561)  |  Culture (157)  |  Do (1905)  |  Drop (77)  |  Force (497)  |  Good (906)  |  Heredity (62)  |  Loss (117)  |  Old (499)  |  Perish (56)  |  Pure (299)  |  Race (278)  |  Resistance (41)  |  Result (700)  |  Sole (50)  |  War (233)  |  World (1850)

Borel makes the amusing supposition of a million monkeys allowed to play upon the keys of a million typewriters. What is the chance that this wanton activity should reproduce exactly all of the volumes which are contained in the library of the British Museum? It certainly is not a large chance, but it may be roughly calculated, and proves in fact to be considerably larger than the chance that a mixture of oxygen and nitrogen will separate into the two pure constituents. After we have learned to estimate such minute chances, and after we have overcome our fear of numbers which are very much larger or very much smaller than those ordinarily employed, we might proceed to calculate the chance of still more extraordinary occurrences, and even have the boldness to regard the living cell as a result of random arrangement and rearrangement of its atoms. However, we cannot but feel that this would be carrying extrapolation too far. This feeling is due not merely to a recognition of the enormous complexity of living tissue but to the conviction that the whole trend of life, the whole process of building up more and more diverse and complex structures, which we call evolution, is the very opposite of that which we might expect from the laws of chance.
The Anatomy of Science (1926), 158-9.
Science quotes on:  |  Activity (218)  |  Arrangement (93)  |  Atom (381)  |  Boldness (11)  |  Émile Borel (2)  |  British (42)  |  Building (158)  |  Calculate (58)  |  Call (781)  |  Cell (146)  |  Certainly (185)  |  Chance (244)  |  Complex (202)  |  Complexity (121)  |  Constituent (47)  |  Conviction (100)  |  Diversity (75)  |  Due (143)  |  Employ (115)  |  Estimate (59)  |  Evolution (635)  |  Expect (203)  |  Extraordinary (83)  |  Extrapolation (6)  |  Fact (1257)  |  Fear (212)  |  Feel (371)  |  Feeling (259)  |  Large (398)  |  Law (913)  |  Learn (672)  |  Learned (235)  |  Library (53)  |  Life (1870)  |  Living (492)  |  Merely (315)  |  Minute (129)  |  Monkey (57)  |  More (2558)  |  Museum (40)  |  Nitrogen (32)  |  Number (710)  |  Occurrence (53)  |  Opposite (110)  |  Overcome (40)  |  Oxygen (77)  |  Proceed (134)  |  Process (439)  |  Prove (261)  |  Pure (299)  |  Random (42)  |  Rearrangement (5)  |  Recognition (93)  |  Regard (312)  |  Result (700)  |  Separate (151)  |  Still (614)  |  Structure (365)  |  Supposition (50)  |  Tissue (51)  |  Trend (23)  |  Two (936)  |  Typewriter (6)  |  Whole (756)  |  Will (2350)

But, as Bacon has well pointed out, truth is more likely to come out of error, if this is clear and definite, than out of confusion, and my experience teaches me that it is better to hold a well-understood and intelligible opinion, even if it should turn out to be wrong, than to be content with a muddle-headed mixture of conflicting views, sometimes miscalled impartiality, and often no better than no opinion at all.
Principles of General Physiology (1915), x.
Science quotes on:  |  Sir Francis Bacon (188)  |  Better (493)  |  Conflicting (13)  |  Confusion (61)  |  Definite (114)  |  Error (339)  |  Experience (494)  |  Impartiality (7)  |  Intelligible (35)  |  More (2558)  |  Opinion (291)  |  Point (584)  |  Truth (1109)  |  Turn (454)  |  Understood (155)  |  View (496)  |  Wrong (246)

But, further, no animal can live upon a mixture of pure protein, fat and carbohydrate, and even when the necessary inorganic material is carefully supplied, the animal still cannot flourish. The animal body is adjusted to live either upon plant tissues or the tissues of other animals, and these contain countless substances other than the proteins, carbohydrates and fats... In diseases such as rickets, and particularly in scurvy, we have had for long years knowledge of a dietetic factor; but though we know how to benefit these conditions empirically, the real errors in the diet are to this day quite obscure. They are, however, certainly of the kind which comprises these minimal qualitative factors that I am considering.
'The Analyst and the Medical Man', The Analyst (1906), 31, 395-6.
Science quotes on:  |  Animal (651)  |  Benefit (123)  |  Body (557)  |  Carbohydrate (3)  |  Carefully (65)  |  Certainly (185)  |  Condition (362)  |  Countless (39)  |  Diet (56)  |  Dietetic (4)  |  Disease (340)  |  Error (339)  |  Fat (11)  |  Flourish (34)  |  Food (213)  |  Kind (564)  |  Know (1538)  |  Knowledge (1647)  |  Live (650)  |  Long (778)  |  Material (366)  |  Necessary (370)  |  Obscure (66)  |  Other (2233)  |  Plant (320)  |  Protein (56)  |  Pure (299)  |  Scurvy (5)  |  Still (614)  |  Substance (253)  |  Tissue (51)  |  Vitamin (13)  |  Year (963)

Chemistry is the science or study of those effects and qualities of matter which are discovered by mixing bodies variously together, or applying them to one another with a view to mixture, and by exposing them to different degrees of heat, alone, or in mixture with one another, in order to enlarge our knowledge of nature, and to promote the useful arts.
From the first of a series of lectures on chemistry, collected in John Robison (ed.), Lectures on the Elements of Chemistry: Delivered in the University of Edinburgh (1807), Vol. 1, 11.
Science quotes on:  |  Alone (324)  |  Art (680)  |  Body (557)  |  Chemistry (376)  |  Degree (277)  |  Different (595)  |  Discover (571)  |  Effect (414)  |  Enlarge (37)  |  Expose (28)  |  Heat (180)  |  Knowledge (1647)  |  Matter (821)  |  Nature (2017)  |  Order (638)  |  Promote (32)  |  Quality (139)  |  Study (701)  |  Together (392)  |  Useful (260)  |  View (496)

Chemistry is the study of the effects of heat and mixture, with a view of discovering their general and subordinate laws, and of improving the useful arts.
This is an editor’s shorter restatement of the definition given by Black in the first of a series of lectures on chemistry, collected in John Robison (ed.), Lectures on the Elements of Chemistry: Delivered in the University of Edinburgh (1807), Vol. 1, 11, footnote. For the definitions as given by Black, see elsewhere on this web page.
Science quotes on:  |  Art (680)  |  Chemistry (376)  |  Definition (238)  |  Discover (571)  |  Effect (414)  |  General (521)  |  Heat (180)  |  Improve (64)  |  Law (913)  |  Study (701)  |  Subordinate (11)  |  Useful (260)  |  View (496)

From what has been said it is also evident, that the Whiteness of the Sun's Light is compounded all the Colours wherewith the several sorts of Rays whereof that Light consists, when by their several Refrangibilities they are separated from one another, do tinge Paper or any other white Body whereon they fall. For those Colours ... are unchangeable, and whenever all those Rays with those their Colours are mix'd again, they reproduce the same white Light as before.
Opticks (1704), Book 1, Part 2, Exper. XV, 114.
Science quotes on:  |  Body (557)  |  Color (155)  |  Compound (117)  |  Consist (223)  |  Do (1905)  |  Evident (92)  |  Fall (243)  |  Light (635)  |  Other (2233)  |  Paper (192)  |  Ray (115)  |  Refrangibility (2)  |  Separation (60)  |  Spectrum (35)  |  Sun (407)  |  Whenever (81)  |  White (132)  |  White Light (5)

I am absolutely enraptured by the atmosphere of a wreck. A dead ship is the house of a tremendous amount of life—fish and plants. The mixture of life and death is mysterious, even religious. There is the same sense of peace and mood that you feel on entering a cathedral.
Quoted in 'Sport: Poet of the Depths', Time (28 Mar 1960)
Science quotes on:  |  Amount (153)  |  Atmosphere (117)  |  Cathedral (27)  |  Death (406)  |  Entering (3)  |  Feel (371)  |  Feeling (259)  |  Fish (130)  |  House (143)  |  Life (1870)  |  Marine Biology (24)  |  Mood (15)  |  Mysterious (83)  |  Mystery (188)  |  Peace (116)  |  Plant (320)  |  Religion (369)  |  Religious (134)  |  Sense (785)  |  Ship (69)  |  Tremendous (29)  |  Wreck (10)

I can only compare their [Hindu] astronomical and mathematical literature … to a mixture of pearl shells and sour dates, or of pearls and dung, or of costly crystals and common pebbles. Both kinds of things are equal in their eyes, since they cannot rise themselves to the methods of strictly scientific deduction.
As translated by Edward C. Sachau, in Alberuni’s India: An Account of the Religion, Philosophy, Literature, Geography, Chronology, Astronomy, Customs, Laws and Astrology of India about A.D. 1030 (1910), Vol. 1, 25.
Science quotes on:  |  Astronomy (251)  |  Compare (76)  |  Crystal (71)  |  Dung (10)  |  Hindu (4)  |  Literature (116)  |  Mathematics (1395)  |  Pearl (8)  |  Pebble (27)  |  Scientific Method (200)  |  Shell (69)  |  Value (393)

I took a glass retort, capable of containing eight ounces of water, and distilled fuming spirit of nitre according to the usual method. In the beginning the acid passed over red, then it became colourless, and lastly again all red: no sooner did this happen, than I took away the receiver; and tied to the mouth of the retort a bladder emptied of air, which I had moistened in its inside with milk of lime lac calcis, (i.e. lime-water, containing more quicklime than water can dissolve) to prevent its being corroded by the acid. Then I continued the distillation, and the bladder gradually expanded. Here-upon I left every thing to cool, tied up the bladder, and took it off from the mouth of the retort.— I filled a ten-ounce glass with this air and put a small burning candle into it; when immediately the candle burnt with a large flame, of so vivid a light that it dazzled the eyes. I mixed one part of this air with three parts of air, wherein fire would not burn; and this mixture afforded air, in every respect familiar to the common sort. Since this air is absolutely necessary for the generation of fire, and makes about one-third of our common air, I shall henceforth, for shortness sake call it empyreal air, [literally fire-air] the air which is unserviceable for the fiery phenomenon, and which makes abut two-thirds of common air, I shall for the future call foul air [literally corrupted air].
Chemische Abhandlung von der Luft und dem Feuer (1777), Chemical Observations and Experiments on Air and Fire (1780), trans. J. R. Forster, 34-5.
Science quotes on:  |  According (236)  |  Acid (83)  |  Air (366)  |  Beginning (312)  |  Being (1276)  |  Bladder (3)  |  Burn (99)  |  Burning (49)  |  Call (781)  |  Candle (32)  |  Capable (174)  |  Common (447)  |  Corrosion (4)  |  Dazzling (13)  |  Dissolve (22)  |  Distillation (11)  |  Expand (56)  |  Eye (440)  |  Fire (203)  |  Flame (44)  |  Foul (15)  |  Fume (7)  |  Future (467)  |  Generation (256)  |  Glass (94)  |  Gradually (102)  |  Happen (282)  |  Immediately (115)  |  Large (398)  |  Light (635)  |  Lime (3)  |  Literally (30)  |  Method (531)  |  Milk (23)  |  More (2558)  |  Mouth (54)  |  Necessary (370)  |  Nitric Acid (2)  |  Oxygen (77)  |  Pass (241)  |  Phenomenon (334)  |  Prevent (98)  |  Receiver (5)  |  Respect (212)  |  Retort (3)  |  Sake (61)  |  Small (489)  |  Spirit (278)  |  Thing (1914)  |  Two (936)  |  Vivid (25)  |  Water (503)

Ideologues of all persuasions think they know how the economy will respond to the Administration’s strange mixture of Lafferism and monetarism. Indeed, their self-confidence is so vast, and their ability to rationalize so crafty, that one cannot imagine a scenario for the next few years, that they would regard as falsifying their dogma. The failure of any prediction can always be blamed on quirky political decisions or unforeseen historical events.
In 'Mathematical Games: The Laffer Curve', Scientific American (Dec 1981), 245, No. 6, 30. Collected in The Night Is Large: Collected Essays, 1938-1995 (1997), 135.
Science quotes on:  |  Ability (162)  |  Administration (15)  |  Blame (31)  |  Confidence (75)  |  Crafty (3)  |  Decision (98)  |  Dogma (49)  |  Economy (59)  |  Event (222)  |  Failure (176)  |  Falsify (3)  |  Historical (70)  |  Imagine (176)  |  Indeed (323)  |  Know (1538)  |  Next (238)  |  Persuasion (9)  |  Political (124)  |  Politics (122)  |  Prediction (89)  |  Quirky (3)  |  Regard (312)  |  Self (268)  |  Self-Confidence (11)  |  Strange (160)  |  Think (1122)  |  Unforeseen (11)  |  Vast (188)  |  Will (2350)  |  Year (963)

If a mixture of different kinds of electrified atoms is moving along in one stream, then when electric and magnetic forces are applied to the stream simultaneously, the different kinds of atoms are sorted out, and the original stream is divided up into a number of smaller streams separated from each other. The particles in any one of the smaller streams are all of the same kind.
From the Romanes Lecture (10 Jun 1914) delivered in the Sheldonian Theatre, published as The Atomic Theory (1914), 9.
Science quotes on:  |  Applied (176)  |  Apply (170)  |  Atom (381)  |  Different (595)  |  Divided (50)  |  Electric (76)  |  Electrified (2)  |  Force (497)  |  Ion (21)  |  Kind (564)  |  Magnetic (44)  |  Mass Spectrometer (2)  |  Move (223)  |  Number (710)  |  Other (2233)  |  Particle (200)  |  Simultaneous (23)  |  Sort (50)  |  Stream (83)

If one of these elements, heat, becomes predominant in any body whatsoever, it destroys and dissolves all the others with its violence. …Again if too much moisture enters the channels of a body, and thus introduces disproportion, the other elements, adulterated by the liquid, are impaired, and the virtues of the mixture dissolved. This defect, in turn, may arise from the cooling properties of moist winds and breezes blowing upon the body. In the same way, increase or diminution of the proportion of air or of the earthy which is natural to the body may enfeeble the other elements.
Vitruvius
In De Architectura, Book 1, Chap 4, Sec. 6. As translated in Morris Hicky Morgan (trans.), Vitruvius: The Ten Books on Architecture (1914), 18-19.
Science quotes on:  |  Air (366)  |  Arise (162)  |  Become (821)  |  Blowing (22)  |  Body (557)  |  Cooling (10)  |  Defect (31)  |  Destroy (189)  |  Dissolve (22)  |  Dominant (26)  |  Element (322)  |  Enter (145)  |  Heat (180)  |  Impair (3)  |  Increase (225)  |  Introduce (63)  |  Liquid (50)  |  Moist (13)  |  Moisture (21)  |  Natural (810)  |  Other (2233)  |  Phlogiston Theory (2)  |  Proportion (140)  |  Turn (454)  |  Violence (37)  |  Virtue (117)  |  Way (1214)  |  Whatsoever (41)  |  Wind (141)

In one department of his [Joseph Black’s] lecture he exceeded any I have ever known, the neatness and unvarying success with which all the manipulations of his experiments were performed. His correct eye and steady hand contributed to the one; his admirable precautions, foreseeing and providing for every emergency, secured the other. I have seen him pour boiling water or boiling acid from a vessel that had no spout into a tube, holding it at such a distance as made the stream’s diameter small, and so vertical that not a drop was spilt. While he poured he would mention this adaptation of the height to the diameter as a necessary condition of success. I have seen him mix two substances in a receiver into which a gas, as chlorine, had been introduced, the effect of the combustion being perhaps to produce a compound inflammable in its nascent state, and the mixture being effected by drawing some string or wire working through the receiver's sides in an air-tight socket. The long table on which the different processes had been carried on was as clean at the end of the lecture as it had been before the apparatus was planted upon it. Not a drop of liquid, not a grain of dust remained.
In Lives of Men of Letters and Science, Who Flourished in the Time of George III (1845), 346-7.
Science quotes on:  |  Acid (83)  |  Adaptation (59)  |  Air (366)  |  Apparatus (70)  |  Being (1276)  |  Joseph Black (14)  |  Chlorine (15)  |  Clean (52)  |  Combustion (22)  |  Compound (117)  |  Condition (362)  |  Department (93)  |  Diameter (28)  |  Different (595)  |  Distance (171)  |  Drawing (56)  |  Drop (77)  |  Dust (68)  |  Effect (414)  |  Emergency (10)  |  End (603)  |  Experiment (736)  |  Eye (440)  |  Gas (89)  |  Grain (50)  |  Inflammable (5)  |  Introduce (63)  |  Known (453)  |  Lecture (111)  |  Liquid (50)  |  Long (778)  |  Manipulation (19)  |  Mention (84)  |  Nascent (4)  |  Neatness (6)  |  Necessary (370)  |  Other (2233)  |  Perform (123)  |  Plant (320)  |  Remain (355)  |  Secured (18)  |  Side (236)  |  Small (489)  |  Spout (2)  |  State (505)  |  Steady (45)  |  Stream (83)  |  Substance (253)  |  Success (327)  |  Table (105)  |  Through (846)  |  Two (936)  |  Vessel (63)  |  Water (503)  |  Wire (36)

In the case of chemical investigations known as decompositions or analyses, it is first important to determine exactly what ingredients you are dealing with, or chemically speaking, what substances are contained in a given mixture or composite. For this purpose we use reagents, i.e., substances that possess certain properties and characteristics, which we well know from references or personal experience, such that the changes which they bring about or undergo, so to say the language that they speak thereby inform the researcher that this or that specific substance is present in the mixture in question.
From Zur Farben-Chemie Musterbilder für Freunde des Schönen und zum Gebrauch für Zeichner, Maler, Verzierer und Zeugdrucker [On Colour Chemistry...] (1850), Introduction. Translation tweaked by Webmaster from version in Herbert and W. Roesky and Klaud Möckel, translated by T.N. Mitchell and W.E. Russey, Chemical Curiosities: Spectacular Experiments and Inspired Quotes (1996), 1. From the original German, “Bei solchen chemischen Untersuchungen, die man zersetzende oder zergliedernde nennt, kommt es zunächst darauf an, zu ermitteln, mit welchen Stoffen man es zu thun hat, oder um chemisch zu reden, welche Stoffe in einem bestimmten Gemenge oder Gemisch enthalten sind. Hierzu bedient man sich sogenannter gegenwirkender Mittel, d. h. Stoffe, die bestimmte Eigenschaften und Eigenthümlichkeiten besitzen und die man aus Ueberlieferung oder eigner Erfahrung genau kennt, so daß die Veränderungen, welche sie bewirken oder erleiden, gleichsam die Sprache sind, mit der sie reden und dadurch dem Forscher anzeigen, daß der und der bestimmte Stoff in der fraglichen Mischung enthalten sei.”
Science quotes on:  |  Analysis (244)  |  Certain (557)  |  Change (639)  |  Characteristic (154)  |  Chemical (303)  |  Composite (4)  |  Contain (68)  |  Decomposition (19)  |  Determination (80)  |  Determine (152)  |  Exactly (14)  |  Experience (494)  |  First (1302)  |  Inform (50)  |  Ingredient (16)  |  Investigation (250)  |  Know (1538)  |  Known (453)  |  Language (308)  |  Man (2252)  |  Personal (75)  |  Possess (157)  |  Present (630)  |  Property (177)  |  Purpose (336)  |  Question (649)  |  Reagent (8)  |  Reference (33)  |  Researcher (36)  |  Say (989)  |  Speak (240)  |  Speaking (118)  |  Specific (98)  |  Substance (253)  |  Undergo (18)  |  Use (771)

In the year 1666 he retired again from Cambridge... to his mother in Lincolnshire & whilst he was musing in a garden it came into his thought that the power of gravity (wch brought an apple from the tree to the ground) was not limited to a certain distance from the earth but that this power must extend much farther than was usually thought. Why not as high as the moon said he to himself & if so that must influence her motion & perhaps retain her in her orbit, whereupon he fell a calculating what would be the effect of that supposition but being absent from books & taking the common estimate in use among Geographers & our seamen before Norwood had measured the earth, that 60 English miles were contained in one degree of latitude on the surface of the Earth his computation did not agree with his theory & inclined him then to entertain a notion that together with the force of gravity there might be a mixture of that force wch the moon would have if it was carried along in a vortex.
[The earliest account of Newton, gravity and an apple.]
Memorandum of a conversation with Newton in August 1726. Quoted in Richard Westfall, Never at Rest: A Biography of Isaac Newton (1980), 154.
Science quotes on:  |  Absent (3)  |  Account (195)  |  Apple (46)  |  Being (1276)  |  Book (413)  |  Calculation (134)  |  Certain (557)  |  Common (447)  |  Computation (28)  |  Degree (277)  |  Distance (171)  |  Earth (1076)  |  Effect (414)  |  Entertain (27)  |  Estimate (59)  |  Extend (129)  |  Farther (51)  |  Force (497)  |  Garden (64)  |  Gravity (140)  |  Ground (222)  |  High (370)  |  Himself (461)  |  Inclined (41)  |  Influence (231)  |  Limit (294)  |  Limited (102)  |  Moon (252)  |  Mother (116)  |  Motion (320)  |  Must (1525)  |  Sir Isaac Newton (363)  |  Notion (120)  |  Orbit (85)  |  Power (771)  |  Retain (57)  |  Supposition (50)  |  Surface (223)  |  Surface Of The Earth (36)  |  Theory (1015)  |  Thought (995)  |  Together (392)  |  Tree (269)  |  Use (771)  |  Usually (176)  |  Vortex (10)  |  Why (491)  |  Year (963)

It is not the amount of oxygen that determines flammability, but its proportion in the mixture with nitrogen. About 40 per cent of the nitrogen on Earth is now buried in the crust; perhaps in the Cretaceous that nitrogen had not yet been buried and existed in the air and so kept the proportion of oxygen safer for trees [from greatly intensified forest fires].
In The Revenge of Gaia: Earth’s Climate Crisis & The Fate of Humanity (2006, 2007), 27.
Science quotes on:  |  Air (366)  |  Amount (153)  |  Bury (19)  |  Cretaceous (2)  |  Crust (43)  |  Determine (152)  |  Earth (1076)  |  Exist (458)  |  Keep (104)  |  Nitrogen (32)  |  Oxygen (77)  |  Proportion (140)  |  Safe (61)  |  Tree (269)

It seems wonderful to everyone that sometimes stones are found that have figures of animals inside and outside. For outside they have an outline, and when they are broken open, the shapes of the internal organs are found inside. And Avicenna says that the cause of this is that animals, just as they are, are sometimes changed into stones, and especially [salty] stones. For he says that just as the Earth and Water are material for stones, so animals, too, are material for stones. And in places where a petrifying force is exhaling, they change into their elements and are attacked by the properties of the qualities [hot, cold, moist, dry] which are present in those places, and in the elements in the bodies of such animals are changed into the dominant element, namely Earth mixed with Water; and then the mineralizing power converts [the mixture] into stone, and the parts of the body retain their shape, inside and outside, just as they were before. There are also stones of this sort that are [salty] and frequently not hard; for it must be a strong power which thus transmutes the bodies of animals, and it slightly burns the Earth in the moisture, so it produces a taste of salt.
De Mineralibus (On Minerals) (c.1261-1263), Book I, tract 2, chapter 8, trans. Dorothy Wyckoff (1967), 52-53.
Science quotes on:  |  Animal (651)  |  Attack (86)  |  Body (557)  |  Broken (56)  |  Burn (99)  |  Cause (561)  |  Change (639)  |  Cold (115)  |  Dominant (26)  |  Dry (65)  |  Earth (1076)  |  Element (322)  |  Figure (162)  |  Force (497)  |  Fossil (143)  |  Hard (246)  |  Hot (63)  |  Internal (69)  |  Material (366)  |  Moist (13)  |  Moisture (21)  |  Must (1525)  |  Open (277)  |  Organ (118)  |  Outside (141)  |  Petrification (5)  |  Power (771)  |  Present (630)  |  Retain (57)  |  Rock (176)  |  Salt (48)  |  Say (989)  |  Stone (168)  |  Strong (182)  |  Taste (93)  |  Water (503)  |  Wonderful (155)

J. J. Sylvester was an enthusiastic supporter of reform [in the teaching of geometry]. The difference in attitude on this question between the two foremost British mathematicians, J. J. Sylvester, the algebraist, and Arthur Cayley, the algebraist and geometer, was grotesque. Sylvester wished to bury Euclid “deeper than e’er plummet sounded” out of the schoolboy’s reach; Cayley, an ardent admirer of Euclid, desired the retention of Simson’s Euclid. When reminded that this treatise was a mixture of Euclid and Simson, Cayley suggested striking out Simson’s additions and keeping strictly to the original treatise.
In History of Elementary Mathematics (1910), 285.
Science quotes on:  |  Addition (70)  |  Admirer (9)  |  Ardent (6)  |  Attitude (84)  |  British (42)  |  Bury (19)  |  Arthur Cayley (17)  |  Deep (241)  |  Desire (212)  |  Difference (355)  |  Enthusiastic (7)  |  Euclid (60)  |  Foremost (11)  |  Geometer (24)  |  Geometry (271)  |  Grotesque (6)  |  Keep (104)  |  Mathematician (407)  |  Mathematicians and Anecdotes (141)  |  Original (61)  |  Plummet (2)  |  Question (649)  |  Reach (286)  |  Reform (22)  |  Remind (16)  |  Retention (5)  |  Schoolboy (9)  |  Sound (187)  |  Strictly (13)  |  Strike (72)  |  Striking (48)  |  Suggest (38)  |  Supporter (4)  |  James Joseph Sylvester (58)  |  Teach (299)  |  Teaching (190)  |  Treatise (46)  |  Two (936)  |  Wish (216)

No one should feel at all offended or threatened by the obvious fact that we are not all born entirely blank, or entirely the same, in our mixture of the broad behavioral propensities defining what we call ‘temperament.’
…...
Science quotes on:  |  Bear (162)  |  Behavioral (6)  |  Blank (14)  |  Broad (28)  |  Call (781)  |  Define (53)  |  Entirely (36)  |  Fact (1257)  |  Feel (371)  |  Obvious (128)  |  Offend (7)  |  Propensity (9)  |  Same (166)  |  Temperament (18)  |  Threaten (33)

No scientific subject has ever aroused quite the same mixture of hopes and fears [as atomic energy].
In Presidential address to the Annual Meeting of the British Association (Sep 1947), as quoted in Brian Austin, Schonland: Scientist and Soldier: From Lightning on the Veld to Nuclear Power at Harwell: The Life of Field Marshal Montgomery's Scientific Adviser (2010), 459.
Science quotes on:  |  Arouse (13)  |  Atomic Energy (25)  |  Energy (373)  |  Fear (212)  |  Hope (321)  |  Scientific (955)  |  Subject (543)

Now, that this whiteness is a Mixture of the severally colour’d rays, falling confusedly on the paper, I see no reason to doubt of.
In 'Answer to some Considerations upon his Doctrine of Light and Colors', Philosophical Transactions (18 Nov 1672), 7, No. 88, 5100. The considerations were from Robert Hooke.
Science quotes on:  |  Color (155)  |  Doubt (314)  |  Light (635)  |  Paper (192)  |  Ray (115)  |  Reason (766)  |  See (1094)  |  White (132)

On hearing the news [of being awarded a Nobel Prize], a friend who knows me only too well, sent me this laconic message: 'Blood, toil, sweat and tears always were a good mixture'.
Nobel Banquet Speech (10 Dec 1962).
Science quotes on:  |  Award (13)  |  Being (1276)  |  Blood (144)  |  Friend (180)  |  Good (906)  |  Hearing (50)  |  Know (1538)  |  Message (53)  |  New (1273)  |  News (36)  |  Nobel Prize (42)  |  Sweat (17)  |  Tear (48)  |  Tears (2)  |  Toil (29)

Satire is a composition of salt and mercury; and it depends upon the different mixture and preparation of those ingredients, that it comes out a noble medicine, or a rank poison.
In Tryon Edwards (ed.), A Dictionary of Thoughts (1908), 502.
Science quotes on:  |  Composition (86)  |  Depend (238)  |  Dependence (46)  |  Difference (355)  |  Different (595)  |  Ingredient (16)  |  Medicine (392)  |  Mercury (54)  |  Noble (93)  |  Poison (46)  |  Preparation (60)  |  Rank (69)  |  Salt (48)  |  Satire (4)

The cause of rain is now, I consider, no longer an object of doubt. If two masses of air of unequal temperatures, by the ordinary currents of the winds, are intermixed, when saturated with vapour, a precipitation ensues. If the masses are under saturation, then less precipitation takes place, or none at all, according to the degree. Also, the warmer the air, the greater is the quantity of vapour precipitated in like circumstances. ... Hence the reason why rains are heavier in summer than in winter, and in warm countries than in cold.
Memoirs of the Literary and Philosophical Society of Manchester (1819), 3, 507. Quoted in George Drysdale Dempsey and Daniel Kinnear Clark, On the Drainage of Lands, Towns, & Buildings (1887), 246.
Science quotes on:  |  According (236)  |  Air (366)  |  Cause (561)  |  Circumstance (139)  |  Circumstances (108)  |  Cold (115)  |  Consider (428)  |  Current (122)  |  Degree (277)  |  Doubt (314)  |  Greater (288)  |  Intermix (3)  |  Object (438)  |  Ordinary (167)  |  Precipitation (7)  |  Quantity (136)  |  Rain (70)  |  Reason (766)  |  Saturation (9)  |  Summer (56)  |  Temperature (82)  |  Two (936)  |  Unequal (12)  |  Vapour (16)  |  Warm (74)  |  Warmth (21)  |  Why (491)  |  Wind (141)  |  Winter (46)

The chemist studies the effects produced by heat and by mixture, in all bodies, or mixtures of bodies, natural or artificial, and studies them with a view to the improvement of arts, and the knowledge of nature.
Restating his own definition in fewer words, from the first of a series of lectures on chemistry, collected in John Robison (ed.), Lectures on the Elements of Chemistry: Delivered in the University of Edinburgh (1807), Vol. 1, 11.
Science quotes on:  |  Art (680)  |  Artificial (38)  |  Body (557)  |  Chemist (169)  |  Definition (238)  |  Effect (414)  |  Heat (180)  |  Improvement (117)  |  Knowledge (1647)  |  Natural (810)  |  Nature (2017)  |  Produce (117)  |  Produced (187)  |  Study (701)  |  View (496)

The construction of an analogue computer or a supersonic airplane is simple when compared to the mixture of space and evolutionary eons represented by a cell.
In 'The Wisdom of Wilderness', Life (22 Dec 1967), 63, No. 25, 10.
Science quotes on:  |  Airplane (43)  |  Analog (4)  |  Cell (146)  |  Comparison (108)  |  Computer (131)  |  Construction (114)  |  Eon (12)  |  Evolution (635)  |  Represent (157)  |  Simple (426)  |  Simplicity (175)  |  Space (523)  |  Supersonic (4)

The degree 48 … in my thermometers holds the middle between between the limit of the most intense cold obtained artificially in a mixture of water, of ice and of sal-ammoniac or even of sea-salt, and the limit of heat which is found in the blood of a healthy man.
From 'Experimenta circa gradum caloris liquorum nonnullorum ebullientium instituta', Philosophical Transactions (1724), 33, 1, as translated in William Francis Magie, A Source Book in Physics (1935), 131. Hence, Fahrenheit specified the upper and lower fixed points of his temperature scale, ranging from 0 to 96.
Science quotes on:  |  Artificial (38)  |  Blood (144)  |  Cold (115)  |  Degree (277)  |  Healthy (70)  |  Heat (180)  |  Ice (58)  |  Intense (22)  |  Limit (294)  |  Man (2252)  |  Most (1728)  |  Obtain (164)  |  Sal Ammoniac (2)  |  Salt (48)  |  Sea (326)  |  Thermometer (11)  |  Water (503)

The universe seems to me infinitely strange and foreign. At such a moment I gaze upon it with a mixture of anguish and euphoria; separate from the universe, as though placed at a certain distance outside it; I look and I see pictures, creatures that move in a kind of timeless time and spaceless space, emitting sounds that are a kind of language I no longer understand or ever register.
‘Interviews: Brief Notes for Radio’, Notes and Counter-Notes: Writings on the Theatre (1964), 136.
Science quotes on:  |  Anguish (2)  |  Certain (557)  |  Creature (242)  |  Distance (171)  |  Emit (15)  |  Euphoria (2)  |  Foreign (45)  |  Gaze (23)  |  Infinitely (13)  |  Kind (564)  |  Language (308)  |  Look (584)  |  Moment (260)  |  Move (223)  |  Movement (162)  |  Outside (141)  |  Picture (148)  |  Place (192)  |  Register (22)  |  See (1094)  |  Separate (151)  |  Sound (187)  |  Space (523)  |  Spaceless (2)  |  Strange (160)  |  Time (1911)  |  Timeless (8)  |  Understand (648)  |  Understanding (527)  |  Universe (900)

The valuable properties of this cement depend in a great measure on the mode of preparing it for use. The mixing should therefore be conducted with care in order to form a perfect union of the powdered cement, sand and water. This can be best accomplished by the use of the New England corn hoe on a board floor or by beating with a hand stamper; not much labour is required if properly applied. Mechanics can judge when the mixture is perfect by the appearance of the mortar, which, when properly prepared, very much resembles putty.
Directions for Using White's Patent Hydraulic Cement.
Science quotes on:  |  Appearance (145)  |  Applied (176)  |  Best (467)  |  Care (203)  |  Cement (10)  |  Conduct (70)  |  Corn (20)  |  Depend (238)  |  Engineering (188)  |  Form (976)  |  Great (1610)  |  Judge (114)  |  Labor (200)  |  Measure (241)  |  Mechanic (120)  |  Mechanics (137)  |  New (1273)  |  Order (638)  |  Perfect (223)  |  Powder (9)  |  Preparing (21)  |  Required (108)  |  Resemble (65)  |  Sand (63)  |  Union (52)  |  Use (771)  |  Water (503)

There are three leading objects in the study of truth:—one, to discover it; another, to demonstrate it when discovered; the last, to separate it from all admixture of falsehood.
As translated in Blaise Pascal and M.P. Faugère (trans.), 'On The Geometrical Spirit', collected in The Miscellaneous Writings of Pascal; Consisting of Letters, Essays, Conversations, and Miscellaneous Thoughts (1849), 73. From the original French, “On peut avoir trois principaux objets dans l’etude de la vérité: l’un, de la découvrir quand on la cherche; l’autre, de la démontrer quand on la possède; le dernier, de la discerner d'avec le faux quand on l’examine,” in 'De l'Esprit Géométrique', Pascal: Opuscules Philosophiques (1887), 82. For an alternative translation, see the quote beginning, “We may have three principal objects…” on the Blaise Pascal Quotes page of this website.
Science quotes on:  |  Demonstrate (79)  |  Discover (571)  |  Falsehood (30)  |  Last (425)  |  Leading (17)  |  Object (438)  |  Separate (151)  |  Study (701)  |  Truth (1109)

Throughout the 1960s and 1970s devoted Beckett readers greeted each successively shorter volume from the master with a mixture of awe and apprehensiveness; it was like watching a great mathematician wielding an infinitesimal calculus, his equations approaching nearer and still nearer to the null point.
Quoted in a review of Samuel Beckett’s Nohow On: Ill Seen Ill Said, Worstward Ho, in 'The Last Word', The New York Review of Books (13 Aug 1992).
Science quotes on:  |  Apprehension (26)  |  Approach (112)  |  Awe (43)  |  Calculus (65)  |  Devote (45)  |  Devoted (59)  |  Equation (138)  |  Great (1610)  |  Greet (7)  |  Infinitesimal (30)  |  Master (182)  |  Mathematician (407)  |  Nearer (45)  |  Point (584)  |  Reader (42)  |  Short (200)  |  Still (614)  |  Successive (73)  |  Throughout (98)  |  Volume (25)  |  Watch (118)  |  Wield (10)

We’ve arranged a global civilization in which most critical elements profoundly depend on science and technology. We have also arranged things so that almost no one understands science and technology. This is a prescription for disaster. We might get away with it for a while, but sooner or later this combustible mixture of ignorance and power is going to blow up in our faces.
From The Demon-Haunted World: Science as a Candle in the Dark (1996), 26.
Science quotes on:  |  Blow (45)  |  Blow Up (8)  |  Civilization (220)  |  Combustible (2)  |  Critical (73)  |  Depend (238)  |  Disaster (58)  |  Element (322)  |  Face (214)  |  Global (39)  |  Ignorance (254)  |  Most (1728)  |  Power (771)  |  Prescription (18)  |  Profoundly (13)  |  Science And Technology (46)  |  Technology (281)  |  Thing (1914)  |  Understand (648)

When ultra-violet light acts on a mixture of water, carbon dioxide, and ammonia, a vast variety of organic substances are made, including sugars and apparently some of the materials from which proteins are built up…. But before the origin of life they must have accumulated till the primitive oceans reached the consistency of hot dilute soup…. The first living or half-living things were probably large molecules synthesized under the influence of the sun’s radiation, and only capable of reproduction in the particularly favorable medium in which they originated….
In 'The Origin of Life', The Inequality of Man: And Other Essays (1932, 1937), 152.
Science quotes on:  |  Accumulate (30)  |  Act (278)  |  Ammonia (15)  |  Capable (174)  |  Carbon (68)  |  Carbon Dioxide (25)  |  Compound (117)  |  Consistency (31)  |  Favorable (24)  |  First (1302)  |  Hot (63)  |  Influence (231)  |  Large (398)  |  Life (1870)  |  Light (635)  |  Living (492)  |  Material (366)  |  Medium (15)  |  Molecule (185)  |  Must (1525)  |  Ocean (216)  |  Organic (161)  |  Origin (250)  |  Origin Of Life (37)  |  Originate (39)  |  Primitive (79)  |  Protein (56)  |  Radiation (48)  |  Reach (286)  |  Reproduction (74)  |  Soup (10)  |  Substance (253)  |  Sugar (26)  |  Sun (407)  |  Synthesize (3)  |  Thing (1914)  |  Variety (138)  |  Vast (188)  |  Violet (11)  |  Water (503)

Where the untrained eye will see nothing but mire and dirt, Science will often reveal exquisite possibilities. The mud we tread under our feet in the street is a grimy mixture of clay and sand, soot and water. Separate the sand, however, as Ruskinn observes—let the atoms arrange themselves in peace according to their nature—and you have the opal. Separate the clay, and it becomes a white earth, fit for the finest porcelain; or if it still further purifies itself, you have a sapphire. Take the soot, and it properly treated it will give you a diamond. While lastly, the water, purified and distilled, will become a dew-drop, or crystallize into a lovely star. Or, again, you may see as you will in any shallow pool either the mud lying at the bottom, or the image of the heavens above.
The Pleasures of Life (1887, 2007), 63.
Science quotes on:  |  According (236)  |  Arrange (33)  |  Atom (381)  |  Become (821)  |  Crystallize (12)  |  Dew (10)  |  Diamond (21)  |  Dirt (17)  |  Drop (77)  |  Earth (1076)  |  Exquisite (27)  |  Eye (440)  |  Fit (139)  |  Heaven (266)  |  Heavens (125)  |  Image (97)  |  Lying (55)  |  Mud (26)  |  Nature (2017)  |  Nothing (1000)  |  Observation (593)  |  Observe (179)  |  Peace (116)  |  Possibility (172)  |  Reveal (152)  |  Sand (63)  |  Sapphire (4)  |  See (1094)  |  Separate (151)  |  Soot (11)  |  Star (460)  |  Still (614)  |  Themselves (433)  |  Tread (17)  |  Untrained (2)  |  Water (503)  |  White (132)  |  Will (2350)

Wherever man has left the stamp of mind on brute-matter; whether we designate his work as structure, texture, or mixture, mechanical or chymical; whether the result be a house, a ship, a garment, a piece of glass, or a metallic implement, these memorials of economy and invention will always be worthy of the attention of the Archaeologist.
In Lecture to the Oxford meeting of the Archaeological Institute (18 Jun 1850), printed in 'On the Study of Achaeology', Archaeological Journal (1851), 8, No. 29, 25.
Science quotes on:  |  Archaeologist (18)  |  Archaeology (51)  |  Attention (196)  |  Brute (30)  |  Definition (238)  |  Garment (13)  |  Glass (94)  |  House (143)  |  Implement (13)  |  Invention (400)  |  Man (2252)  |  Material (366)  |  Matter (821)  |  Mechanical (145)  |  Mind (1377)  |  Result (700)  |  Ship (69)  |  Stamp (36)  |  Structure (365)  |  Wherever (51)  |  Will (2350)  |  Work (1402)

While all bodies are composed of the four elements, that is, of heat, moisture, the earthy, and air, yet there are mixtures according to natural temperament which make up the natures of all the different animals of the world, each after its kind.
Vitruvius
In De Architectura, Book 1, Chap 4, Sec. 5. As translated in Morris Hicky Morgan (trans.), Vitruvius: The Ten Books on Architecture (1914), 16.
Science quotes on:  |  According (236)  |  Air (366)  |  Animal (651)  |  Different (595)  |  Earth (1076)  |  Element (322)  |  Heat (180)  |  Kind (564)  |  Moisture (21)  |  Natural (810)  |  Nature (2017)  |  Phlogiston Theory (2)  |  Temperament (18)  |  World (1850)


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:
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 |
Thank you for sharing.
- 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


by Ian Ellis
who invites your feedback
Thank you for sharing.
Today in Science History
Sign up for Newsletter
with quiz, quotes and more.