Celebrating 18 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 P > Category: Physiology

Physiology Quotes (66 quotes)

[When recording electrical impulses from a frog nerve-muscle preparation seemed to show a tiresomely oscillating electrical artefact—but only when the muscle was hanging unsupported.] The explanation suddenly dawned on me ... a muscle hanging under its own weight ought, if you come to think of it, to be sending sensory impulses up the nerves coming from the muscle spindles ... That particular day’s work, I think, had all the elements that one could wish for. The new apparatus seemed to be misbehaving very badly indeed, and I suddenly found it was behaving so well that it was opening up an entire new range of data ... it didn’t involve any particular hard work, or any particular intelligence on my part. It was just one of those things which sometimes happens in a laboratory if you stick apparatus together and see what results you get.
From 'Memorable experiences in research', Diabetes (1954), 3, 17-18. As cited in Alan McComa, Galvani's Spark: The Story of the Nerve Impulse (2011), 102-103.
Science quotes on:  |  Apparatus (30)  |  Artefact (2)  |  Badly (9)  |  Behave (13)  |  Data (100)  |  Entire (29)  |  Explanation (161)  |  Found (11)  |  Frog (30)  |  Hang (13)  |  Happen (63)  |  Hard (70)  |  Impulse (24)  |  Insight (57)  |  Intelligence (138)  |  Involve (27)  |  Laboratory (120)  |  Muscle (32)  |  Nerve (66)  |  New (340)  |  Range (38)  |  Research (517)  |  Result (250)  |  See (197)  |  Send (13)  |  Sensory (2)  |  Serendipity (13)  |  Suddenly (4)  |  Think (205)  |  Unsupported (3)

A good physiological experiment like a good physical one requires that it should present anywhere, at any time, under identical conditions, the same certain and unequivocal phenomena that can always be confirmed.
Bestätigung des Bell'schen Lehrsatzes, dass die doppelten Wurzeln der Rückenmarksnerven verschiedene Functionen haben, durch neue nod entscheidende Experimente' (1831). Trans. Edwin Clarke and C. D. O'Malley, The Human Brain and Spinal Cord (1968), 304.
Science quotes on:  |  Certain (84)  |  Condition (119)  |  Confirmation (15)  |  Experiment (543)  |  Phenomenon (218)

A man cannot marry before he has studied anatomy and has dissected at the least one woman.
The Physiology of Marriage (1826), trans. Sharon Marcus (1997), Aphorism XXVII, 63.
Science quotes on:  |  Anatomy (59)  |  Marriage (31)

All of our experience indicates that life can manifest itself only in a concrete form, and that it is bound to certain substantial loci. These loci are cells and cell formations. But we are far from seeking the last and highest level of understanding in the morphology of these loci of life. Anatomy does not exclude physiology, but physiology certainly presupposes anatomy. The phenomena that the physiologist investigates occur in special organs with quite characteristic anatomical arrangements; the various morphological parts disclosed by the anatomist are the bearers of properties or, if you will, of forces probed by the physiologist; when the physiologist has established a law, whether through physical or chemical investigation, the anatomist can still proudly state: This is the structure in which the law becomes manifest.
In 'Cellular-Pathologie', Archiv für pathologische Anatomie und Physiologie und fur klinische Medizin (1855), 8, 19, as translated in LellandJ. Rather, 'Cellular Pathology', Disease, Life, and Man: Selected Essays by Rudolf Virchow (1958), 84.
Science quotes on:  |  Anatomist (14)  |  Anatomy (59)  |  Cell (125)  |  Characteristic (66)  |  Chemical (72)  |  Concrete (21)  |  Investigate (49)  |  Investigation (123)  |  Law (418)  |  Level (51)  |  Life (917)  |  Locus (3)  |  Morphology (18)  |  Organ (60)  |  Phenomenon (218)  |  Physiologist (12)  |  Pride (45)  |  Probe (6)  |  Property (96)  |  Seeking (30)  |  Structure (191)  |  Substantial (7)  |  Understanding (317)

All palaetiological sciences, all speculations which attempt to ascend from the present to the remote past, by the chain of causation, do also, by an inevitable consequence, urge us to look for the beginning of the state of things which we thus contemplate; but in none of these cases have men been able, by the aid of science, to arrive at a beginning which is homogeneous with the known course of events. The first origin of language, of civilization, of law and government, cannot be clearly made out by reasoning and research; and just as little, we may expect, will a knowledge of the origin of the existing and extinct species of plants and animals, be the result of physiological and geological investigation.
In History of the Inductive Sciences (1837), Vol. 3, 581.
Science quotes on:  |  Civilization (155)  |  Extinct (7)  |  Geology (187)  |  Government (85)  |  Homogeneous (2)  |  Investigation (123)  |  Knowledge (1128)  |  Language (155)  |  Law (418)  |  Origin (77)  |  Palaetiology (2)  |  Plant (173)  |  Reason (330)  |  Research (517)  |  Result (250)  |  Species (181)  |  Speculation (77)

Anatomy is to physiology as geography is to history; it describes the theatre of events.
De Naturali Parte Medicinae Libri Septem (1542), Ch. 1.
Science quotes on:  |  Anatomy (59)

At the beginning of its existence as a science, biology was forced to take cognizance of the seemingly boundless variety of living things, for no exact study of life phenomena was possible until the apparent chaos of the distinct kinds of organisms had been reduced to a rational system. Systematics and morphology, two predominantly descriptive and observational disciplines, took precedence among biological sciences during the eighteenth and nineteenth centuries. More recently physiology has come to the foreground, accompanied by the introduction of quantitative methods and by a shift from the observationalism of the past to a predominance of experimentation.
In Genetics and the Origin of Species (1937, 1982), 6.
Science quotes on:  |  18th Century (17)  |  19th Century (22)  |  Biology (150)  |  Boundless (11)  |  Chaos (63)  |  Description (72)  |  Discipline (38)  |  Experiment (543)  |  Foreground (3)  |  Introduction (31)  |  Morphology (18)  |  Observation (418)  |  Organism (126)  |  Precedence (2)  |  Predominance (2)  |  Rational (42)  |  Shift (21)  |  Systematic (25)  |  Variety (53)

Biology can be divided into the study of proximate causes, the study of the physiological sciences (broadly conceived), and into the study of ultimate (evolutionary) causes, the subject of natural history.
The Growth of Biological Thought: Diversity, Evolution and Inheritance (1982), 67.
Science quotes on:  |  Biology (150)  |  Cause (231)  |  Natural History (44)  |  Proximity (3)  |  Study (331)

Casting off the dark fog of verbal philosophy and vulgar medicine, which inculcate names alone ... I tried a series of experiments to explain more clearly many phenomena, particularly those of physiology. In order that I might subject as far as possible the reasonings of the Galenists and Peripatetics to sensory criteria, I began, after trying experiments, to write dialogues in which a Galenist adduced the better-known and stronger reasons and arguments; these a mechanist surgeon refuted by citing to the contrary the experiments I had tried, and a third, neutral interlocutor weighed the reasons advanced by both and provided an opportunity for further progress.
'Malpighi at Pisa 1656-1659', in H. B. Adelmann (ed.), Marcello Malpighi and the Evolution of Embryology (1966), Vol. 1, 155-6.
Science quotes on:  |  Argument (59)  |  Experiment (543)  |  Explanation (161)  |  Galen (19)  |  Inculcate (5)  |  Medicine (322)  |  Name (118)  |  Phenomenon (218)  |  Philosophy (213)  |  Progress (317)  |  Reason (330)

Connected by innumerable ties with abstract science, Physiology is yet in the most intimate relation with humanity; and by teaching us that law and order, and a definite scheme of development, regulate even the strangest and wildest manifestations of individual life, she prepares the student to look for a goal even amidst the erratic wanderings of mankind, and to believe that history offers something more than an entertaining chaos—a journal of a toilsome, tragi-comic march nowither.
In 'Educational Value of Natural History Sciences', Lay Sermons, Addresses, and Reviews (1870), 97.
Science quotes on:  |  Abstract (43)  |  Belief (400)  |  Chaos (63)  |  Comic (3)  |  Development (228)  |  Entertaining (2)  |  Erratic (2)  |  Goal (81)  |  History (302)  |  Humanity (104)  |  Individual (177)  |  Intimate (11)  |  Journal (13)  |  Law And Order (4)  |  Life (917)  |  Manifestation (30)  |  Mankind (196)  |  Prepare (19)  |  Science (1699)  |  Strange (61)  |  Student (131)  |  Teaching (99)  |  Toil (10)  |  Tragic (8)  |  Wild (39)

Descriptive anatomy is to physiology what geography is to history, and just as it is not enough to know the typography of a country to understand its history, so also it is not enough to know the anatomy of organs to understand their functions.
Lectures on the Phenomena of Life Common to Animals and Plants (1878), trans. Hebbel E. Hoff, Roger Guillemin and Lucienne Guillemin (1974), 7.
Science quotes on:  |  Anatomy (59)

Dissection ... teaches us that the body of man is made up of certain kinds of material, so differing from each other in optical and other physical characters and so built up together as to give the body certain structural features. Chemical examination further teaches us that these kinds of material are composed of various chemical substances, a large number of which have this characteristic that they possess a considerable amount of potential energy capable of being set free, rendered actual, by oxidation or some other chemical change. Thus the body as a whole may, from a chemical point of view, be considered as a mass of various chemical substances, representing altogether a considerable capital of potential energy.
From Introduction to A Text Book of Physiology (1876, 1891), Book 1, 1.
Science quotes on:  |  Actual (34)  |  Altogether (6)  |  Body (193)  |  Capable (26)  |  Capital (15)  |  Character (82)  |  Characteristic (66)  |  Chemical (72)  |  Chemical Change (4)  |  Compose (7)  |  Consider (45)  |  Considerable (11)  |  Dissection (26)  |  Examination (60)  |  Free (59)  |  Made (14)  |  Mass (61)  |  Material (124)  |  Optical (3)  |  Oxidation (6)  |  Physical (94)  |  Point Of View (26)  |  Potential Energy (3)  |  Render (17)  |  Represent (27)  |  Set (56)  |  Structural (8)  |  Various (25)  |  Whole (122)

Doctors and Clergymen. A physician’s physiology has much the same relation to his power of healing as a cleric’s divinity has to his power of influencing conduct.
Samuel Butler, Henry Festing Jones (ed.), The Note-Books of Samuel Butler (1917), 216.
Science quotes on:  |  Clergyman (5)  |  Conduct (23)  |  Divinity (11)  |  Doctor (100)  |  Healing (16)  |  Influence (110)  |  Physician (232)  |  Power (273)  |  Relation (96)

During the half-century that has elapsed since the enunciation of the cell-theory by Schleiden and Schwann, in 1838-39, it has became ever more clearly apparent that the key to all ultimate biological problems must, in the last analysis, be sought in the cell. It was the cell-theory that first brought the structure of plants and animals under one point of view by revealing their common plan of organization. It was through the cell-theory that Kolliker and Remak opened the way to an understanding of the nature of embryological development, and the law of genetic continuity lying at the basis of inheritance. It was the cell-­theory again which, in the hands of Virchaw and Max Schultze, inaugurated a new era in the history of physiology and pathology, by showing that all the various functions of the body, in health and in disease, are but the outward expression of cell­-activities. And at a still later day it was through the cell-theory that Hertwig, Fol, Van Beneden, and Strasburger solved the long-standing riddle of the fertilization of the egg, and the mechanism of hereditary transmission. No other biological generalization, save only the theory of organic evolution, has brought so many apparently diverse phenomena under a common point of view or has accomplished more far the unification of knowledge. The cell-theory must therefore be placed beside the evolution-theory as one of the foundation stones of modern biology.
In The Cell in Development and Inheritance (1896), 1.
Science quotes on:  |  Development (228)  |  Embryo (22)  |  Evolution (482)  |  Fertilization (15)  |  Heredity (51)  |  Oskar Hertwig (2)  |  Key (38)  |  Pathology (11)  |  Problem (362)  |  Robert Remak (2)  |  Riddle (18)  |  Theodor Schwann (12)  |  Structure (191)  |  Rudolf Virchow (38)

Effects vary with the conditions which bring them to pass, but laws do not vary. Physiological and pathological states are ruled by the same forces; they differ only because of the special conditions under which the vital laws manifest themselves.
From An Introduction to the Study of Experimental Medicine (1865), as translated by Henry Copley Greene (1957),10.
Science quotes on:  |  Law (418)  |  Pathology (11)

Eventually the process of aging, which is unlikely to be simple, should be understandable. Hopefully some of its processes can be slowed down or avoided. In fact, in the next century, we shall have to tackle the question of the preferred form of death.
Science quotes on:  |  Age (137)  |  Avoid (34)  |  Century (94)  |  Death (270)  |  Form (210)  |  Medicine (322)  |  Prefer (18)  |  Process (201)  |  Question (315)  |  Simple (111)  |  Slow (36)  |  Tackle (4)  |  Understandable (4)

I am convinced that an important stage of human thought will have been reached when the physiological and the psychological, the objective and the subjective, are actually united, when the tormenting conflicts or contradictions between my consciousness and my body will have been factually resolved or discarded.
Physiology of the Higher Nervous Activity (1932), 93-4.
Science quotes on:  |  Actual (34)  |  Body (193)  |  Conflict (49)  |  Consciousness (71)  |  Contradiction (44)  |  Convincing (9)  |  Discard (14)  |  Fact (609)  |  Human (445)  |  Importance (183)  |  Objective (49)  |  Psychology (125)  |  Reach (68)  |  Resolve (11)  |  Stage (39)  |  Subjective (9)  |  Thought (374)  |  Torment (13)  |  Unite (13)

I believe that women‐centred, physiologically accurate knowledge of what is normal related to our female bodies, menopause, menstrual cycles and many other aspects of our health does not exist.
Address to First Congress on Women, Health, and Work (Barcelona, 1996). As quoted in 'Aphorism of the Month', Journal of Epidemiology and Community Health (Dec 2007), 61, Suppl. 2, 932.
Science quotes on:  |  Accuracy (52)  |  Aspect (37)  |  Body (193)  |  Exist (89)  |  Health (136)  |  Knowledge (1128)  |  Menopause (2)  |  Normal (21)  |  Woman (94)

I feel like a white granular mass of amorphous crystals—my formula appears to be isomeric with Spasmotoxin. My aurochloride precipitates into beautiful prismatic needles. My Platinochloride develops octohedron crystals,—with fine blue florescence. My physiological action is not indifferent. One millionth of a grain injected under the skin of a frog produced instantaneous death accompanied by an orange blossom odor. The heart stopped in systole. A base—L3H9NG4—offers analogous reaction to phosmotinigstic acid.
In letter to George M. Gould (1889), collected in Elizabeth Bisland The Writings of Lafcadio Hearn (1922), Vol. 14, 89.
Science quotes on:  |  Acid (18)  |  Amorphous (3)  |  Base (43)  |  Blossom (9)  |  Blue (30)  |  Crystal (47)  |  Death (270)  |  Fluorescence (2)  |  Formula (51)  |  Frog (30)  |  Grain (24)  |  Granule (3)  |  Heart (110)  |  Injection (7)  |  Isomer (5)  |  Needle (5)  |  Odor (7)  |  Orange (6)  |  Prismatic (2)  |  Reaction (59)  |  White (38)

I really see no harm which can come of giving our children a little knowledge of physiology. ... The instruction must be real, based upon observation, eked out by good explanatory diagrams and models, and conveyed by a teacher whose own knowledge has been acquired by a study of the facts; and not the mere catechismal parrot-work which too often usurps the place of elementary teaching.
Science and Culture (1882), 92.
Science quotes on:  |  Catechism (2)  |  Child (189)  |  Diagram (5)  |  Education (280)  |  Instruction (51)  |  Knowledge (1128)  |  Model (64)  |  Observation (418)  |  Teacher (90)

I should object to any experimentation which can justly be called painful, for the purpose of elementary instruction ... [but I regret] a condition of the law which permits a boy to troll for pike, or set lines with live frog bait, for idle amusement; and, at the same time, lays the teacher of that boy open to the penalty of fine and imprisonment, if he uses the same animal for the purpose of exhibiting one of the most beautiful and instructive of physiological spectacles, the circulation in the web of the foot. ... [Maybe the frog is] inconvenienced by being wrapped up in a wet rag, and having his toes tied out ... But you must not inflict the least pain on a vertebrated animal for scientific purposes (though you may do a good deal in that way for gain or for sport) without due licence of the Secretary of State for the Home Department, granted under the authority of the Vivisection Act.
... [Yet, in] 1877, two persons may be charged with cruelty to animals. One has impaled a frog, and suffered the creature to writhe about in that condition for hours; the other has pained the animal no more than one of us would be pained by tying strings round his fingers, and keeping him in the position of a hydropathic patient. The first offender says, 'I did it because I find fishing very amusing,' and the magistrate bids him depart in peace; nay, probably wishes him good sport. The second pleads, 'I wanted to impress a scientific truth, with a distinctness attainable in no other way, on the minds of my scholars,' and the magistrate fines him five pounds.
I cannot but think that this is an anomalous and not wholly creditable state of things.
'On Elementary Instruction in Physiology'. Science and Culture (1882), 92.
Science quotes on:  |  Bait (2)  |  Circulation (17)  |  Demonstration (51)  |  Fine (24)  |  Fishing (12)  |  Frog (30)  |  Instruction (51)  |  Law (418)  |  Pain (82)  |  Trial (23)  |  Vivisection (7)

I venture to maintain, that, if the general culture obtained in the Faculty of Arts were what it ought to be, the student would have quite as much knowledge of the fundamental principles of Physics, of Chemistry, and of Biology, as he needs, before he commenced his special medical studies. Moreover, I would urge, that a thorough study of Human Physiology is, in itself, an education broader and more comprehensive than much that passes under that name. There is no side of the intellect which it does not call into play, no region of human knowledge into which either its roots, or its branches, do not extend; like the Atlantic between the Old and the New Worlds, its waves wash the shores of the two worlds of matter and of mind; its tributary streams flow from both; through its waters, as yet unfurrowed by the keel of any Columbus, lies the road, if such there be, from the one to the other; far away from that Northwest Passage of mere speculation, in which so many brave souls have been hopelessly frozen up.
'Universities: Actual and Ideal' (1874). In Collected Essays (1893), Vol. 3, 220.
Science quotes on:  |  Biology (150)  |  Chemistry (239)  |  Culture (85)  |  Education (280)  |  Knowledge (1128)  |  Physics (301)  |  Principle (228)  |  Speculation (77)  |  Student (131)  |  Study (331)

In early times, when the knowledge of nature was small, little attempt was made to divide science into parts, and men of science did not specialize. Aristotle was a master of all science known in his day, and wrote indifferently treatises on physics or animals. As increasing knowledge made it impossible for any one man to grasp all scientific subjects, lines of division were drawn for convenience of study and of teaching. Besides the broad distinction into physical and biological science, minute subdivisions arose, and, at a certain stage of development, much attention was, given to methods of classification, and much emphasis laid on the results, which were thought to have a significance beyond that of the mere convenience of mankind.
But we have reached the stage when the different streams of knowledge, followed by the different sciences, are coalescing, and the artificial barriers raised by calling those sciences by different names are breaking down. Geology uses the methods and data of physics, chemistry and biology; no one can say whether the science of radioactivity is to be classed as chemistry or physics, or whether sociology is properly grouped with biology or economics. Indeed, it is often just where this coalescence of two subjects occurs, when some connecting channel between them is opened suddenly, that the most striking advances in knowledge take place. The accumulated experience of one department of science, and the special methods which have been developed to deal with its problems, become suddenly available in the domain of another department, and many questions insoluble before may find answers in the new light cast upon them. Such considerations show us that science is in reality one, though we may agree to look on it now from one side and now from another as we approach it from the standpoint of physics, physiology or psychology.
In article 'Science', Encyclopedia Britannica (1911), 402.
Science quotes on:  |  Accumulated (2)  |  Animal (309)  |  Aristotle (141)  |  Barrier (19)  |  Biology (150)  |  Chemistry (239)  |  Classification (79)  |  Coalesce (2)  |  Data (100)  |  Development (228)  |  Difference (208)  |  Divide (24)  |  Domain (21)  |  Geology (187)  |  Indifferent (9)  |  Knowledge (1128)  |  Master (55)  |  Men Of Science (97)  |  Method (154)  |  Nature (1029)  |  Physics (301)  |  Psychology (125)  |  Radioactivity (26)  |  Science (1699)  |  Sociology (31)  |  Specialize (2)  |  Treatise (19)

In general, we receive impressions only in consequence of motion, and we might establish it as an axiom that without motion there is no sensation.
In Elements of Chemistry: In a New Systematic Order, Containing All the Modern Discoveries (1790), 20.
Science quotes on:  |  Axiom (26)  |  Consequence (76)  |  Impression (51)  |  Motion (127)  |  Receive (39)  |  Sensation (22)

In physiology, as in all other sciences, no discovery is useless, no curiosity misplaced or too ambitious, and we may be certain that every advance achieved in the quest of pure knowledge will sooner or later play its part in the service of man.
The Linacre Lecture on the Law of the Heart (1918), 147.
Science quotes on:  |  Achievement (128)  |  Advance (123)  |  Ambition (25)  |  Curiosity (89)  |  Discovery (591)  |  Knowledge (1128)  |  Man (345)  |  Play (60)  |  Quest (24)  |  Science (1699)  |  Service (54)  |  Uselessness (21)

In the training and in the exercise of medicine a remoteness abides between the field of neurology and that of mental health, psychiatry. It is sometimes blamed to prejudice on the part of the one side or the other. It is both more grave and less grave than that. It has a reasonable basis. It is rooted in the energy-mind problem. Physiology has not enough to offer about the brain in relation to the mind to lend the psychiatrist much help.
In 'The Brain Collaborates With Psyche', Man On His Nature: The Gifford Lectures, Edinburgh 1937-8 (1940), 283.
Science quotes on:  |  Blame (17)  |  Brain (181)  |  Exercise (35)  |  Help (68)  |  Medicine (322)  |  Mental Health (4)  |  Mind (544)  |  Prejudice (58)  |  Problem (362)  |  Psychiatrist (13)  |  Psychiatry (19)  |  Remoteness (7)  |  Training (39)

Intelligence is important in psychology for two reasons. First, it is one of the most scientifically developed corners of the subject, giving the student as complete a view as is possible anywhere of the way scientific method can be applied to psychological problems. Secondly, it is of immense practical importance, educationally, socially, and in regard to physiology and genetics.
From Intelligence: Its Structure, Growth and Action: Its Structure, Growth and Action (1987), 1.
Science quotes on:  |  Applied (15)  |  Corner (24)  |  Developed (8)  |  Genetics (98)  |  Immense (28)  |  Importance (183)  |  Important (124)  |  Intelligence (138)  |  Method (154)  |  Possible (100)  |  Practical (93)  |  Problem (362)  |  Psychological (10)  |  Psychology (125)  |  Reason (330)  |  Scientific (169)  |  Socially (2)  |  Subject (129)  |  View (115)

It has been recognized that hydrogen bonds restrain protein molecules to their native configurations, and I believe that as the methods of structural chemistry are further applied to physiological problems it will be found that the significance of the hydrogen bond for physiology is greater than that of any other single structural feature.
Nature of the Chemical Bond and the Structure of Molecules and Crystals (1939), 265.
Science quotes on:  |  Application (117)  |  Belief (400)  |  Chemistry (239)  |  Configuration (4)  |  Feature (34)  |  Hydrogen Bond (3)  |  Method (154)  |  Molecule (125)  |  Native (11)  |  Problem (362)  |  Protein (43)  |  Recognition (62)  |  Restraint (8)  |  Significance (60)  |  Structure (191)

It seems to me that the view toward which we are tending is that the specificity in gene action is always a chemical specificity, probably the production of enzymes which guide metabolic processes along particular channels. A given array of genes thus determines the production of a particular kind of protoplasm with particular properties—such, for example, as that of responding to surface forces by the formation of a special sort of semipermeable membrane, and that of responding to trivial asymmetries in the play of external stimuli by polarization, with consequent orderly quantitative gradients in all physiologic processes. Different genes may now be called into play at different points in this simple pattern, either through the local formation of their specific substrates for action, or by activation of a mutational nature. In either case the pattern becomes more complex and qualitatively differentiated. Successive interactions of differentiated regions and the calling into play of additional genes may lead to any degree of complexity of pattern in the organism as a largely self-contained system. The array of genes, assembled in the course of evolution, must of course be one which determines a highly self­regulatory system of reactions. On this view the genes are highly specific chemically, and thus called into play only under very specific conditions; but their morphological effects, if any, rest on quantitative influences of immediate or remote products on growth gradients, which are resultants of all that has gone on before in the organism.
In 'Genetics of Abnormal Growth in the Guinea Pig', Cold Spring Harbor Symposia on Quantitative Biology (1934), 2, 142.
Science quotes on:  |  Activation (5)  |  Asymmetry (4)  |  Channel (17)  |  Complexity (80)  |  Enzyme (14)  |  Evolution (482)  |  Gene (68)  |  Gradient (2)  |  Growth (111)  |  Membrane (11)  |  Metabolism (11)  |  Morphological (2)  |  Mutation (25)  |  Nature (1029)  |  Organism (126)  |  Pattern (56)  |  Polarization (2)  |  Protoplasm (12)  |  Qualitative (12)  |  Quantitative (15)  |  Reaction (59)  |  Simplicity (126)  |  Stimulus (18)  |  Trivial (30)

It seems to me that you are solving a problem which goes beyond the limits of physiology in too simple a way. Physiology has realized its problem with fortitude, breaking man down into endless actions and counteractions and reducing him to a crossing, a vortex of reflex acts. Let it now permit sociology to restore him as a whole. Sociology will wrest man from the anatomical theatre and return him to history.
Letter to his son, Alexander, July-Aug 1868. Trans. Roger Smith, Inhibition: History and Meaning in the Sciences of Mind and Brain (1992), 223.
Science quotes on:  |  Man (345)  |  Sociology (31)

Logic is not concerned with human behavior in the same sense that physiology, psychology, and social sciences are concerned with it. These sciences formulate laws or universal statements which have as their subject matter human activities as processes in time. Logic, on the contrary, is concerned with relations between factual sentences (or thoughts). If logic ever discusses the truth of factual sentences it does so only conditionally, somewhat as follows: if such-and-such a sentence is true, then such-and-such another sentence is true. Logic itself does not decide whether the first sentence is true, but surrenders that question to one or the other of the empirical sciences.
Logic (1937). In The Language of Wisdom and Folly: Background Readings in Semantics (1967), 44.
Science quotes on:  |  Activity (97)  |  Concern (76)  |  Decision (58)  |  Discuss (14)  |  Empirical Science (4)  |  Fact (609)  |  Formulation (20)  |  Human Behavior (4)  |  Law (418)  |  Logic (187)  |  Process (201)  |  Psychology (125)  |  Question (315)  |  Relation (96)  |  Sense (240)  |  Sentence (20)  |  Social Science (18)  |  Statement (56)  |  Subject (129)  |  Surrender (13)  |  Thought (374)  |  Time (439)  |  True (120)  |  Universal (70)

Nature may be as selfishly studied as trade. Astronomy to the selfish becomes astrology; psychology, mesmerism (with intent to show where our spoons are gone); and anatomy and physiology become phrenology and palmistry.
Essay, 'Nature', in Ralph Waldo Emerson, Alfred Riggs Ferguson (ed.) and Jean Ferguson Carr (ed.), The Collected Works of Ralph Waldo Emerson, Volume III, Essays: Second Series (1984), 13.
Science quotes on:  |  Anatomy (59)  |  Astrology (35)  |  Astronomy (175)  |  Mesmerism (2)  |  Nature (1029)  |  Phrenology (4)  |  Psychology (125)  |  Study (331)

No matter how we twist and turn we shall always come back to the cell. The eternal merit of Schwann does not lie in his cell theory that has occupied the foreground for so long, and perhaps will soon be given up, but in his description of the development of the various tissues, and in his demonstration that this development (hence all physiological activity) is in the end traceable back to the cell. Now if pathology is nothing but physiology with obstacles, and diseased life nothing but healthy life interfered with by all manner of external and internal influences then pathology too must be referred back to the cell.
In 'Cellular-Pathologie', Archiv für pathologische Anatomie und Physiologie und fur klinische Medizin (1855), 8, 13-14, as translated in LellandJ. Rather, 'Cellular Pathology', Disease, Life, and Man: Selected Essays by Rudolf Virchow (1958), 81.
Science quotes on:  |  Activity (97)  |  Cell (125)  |  Demonstration (51)  |  Description (72)  |  Development (228)  |  Disease (257)  |  Eternal (43)  |  External (45)  |  Foreground (3)  |  Given (4)  |  Health (136)  |  Influence (110)  |  Interference (12)  |  Internal (18)  |  Life (917)  |  Merit (25)  |  Obstacle (21)  |  Occupied (2)  |  Pathology (11)  |  Physiological (6)  |  Theodor Schwann (12)  |  Theory (582)  |  Tissue (24)  |  Trace (39)  |  Turn (72)  |  Twist (2)  |  Various (25)

Physiological experiment on animals is justifiable for real investigation, but not for mere damnable and detestable curiosity.
letter to E. Ray Lankester
Science quotes on:  |  Animal (309)  |  Experiment (543)

Physiological response to thinking and to pain is the same; and man is not given to hurting himself.
Science quotes on:  |  Pain (82)  |  Thought (374)

Physiology is the experimental science par excellence of all sciences; that in which there is least to be learnt by mere observation, and that which affords the greatest field for the exercise of those faculties which characterize the experimental philosopher.
In 'Educational Value of Natural History Sciences', Lay Sermons, Addresses, and Reviews (1870), 90.
Science quotes on:  |  Experiment (543)  |  Learn (160)  |  Mere (41)  |  Observation (418)  |  Science (1699)

Physiology is concerned with all those phenomena of life that present them selves to us in sense perception as bodily processes, and accordingly form part of that total environment which we name the external world.

Physiology is the basis of all medical improvement and in precise proportion as our survey of it becomes more accurate and extended, it is rendered more solid.
In 'An Inquiry, Analogical and Experimental, into the Different Electrical conditions of Arterial and Venous Blood', New Orleans Medical and Surgical Journal (1853-4), 10, 584-602 & 738-757. As cited in George B. Roth, 'Dr. John Gorrie—Inventor of Artificial Ice and Mechanical Refrigeration', The Scientific Monthly (May 1936) 42 No. 5, 464-469.
Science quotes on:  |  Accurate (21)  |  Basis (60)  |  Extended (2)  |  Improvement (67)  |  Medical (18)  |  Precise (17)  |  Proportion (47)  |  Rendered (2)  |  Solid (34)

Physiology is the stepchild of medicine. That is why Cinderella often turns out the queen.

Physiology seeks to derive the processes in our own nervous system from general physical forces, without considering whether these processes are or are not accompanied by processes of consciousness.

Physiology, in its analysis of the physiological functions of the sense organs, must use the results of subjective observation of sensations; and psychology, in its turn, needs to know the physiological aspects of sensory function, in order rightly to appreciate the psychological.

Psychological introspection goes hand in hand with the methods of experimental physiology. If one wants to put the main emphasis on the characteristic of the method, our science, experimental psychology, is to be distinguished from the ordinary mental philosophy [Seelenlehre], based purely on introspection.
In Grundzüge der physiologischen Psychologie [Principles of Physiological Psychology] (1874), 2-3. Trans. K. Damiger, Constructing the Subject: Historical Origins of Psychological Research (1990), 206.
Science quotes on:  |  Experiment (543)  |  Introspection (3)  |  Philosophy (213)  |  Psychology (125)

Psychology is physiology above the collar button.
Science quotes on:  |  Brain (181)  |  Psychology (125)

Scientific physiology has the task of determining the functions of the animal body and deriving them as a necessary consequence from its elementary conditions.
Lehrbuch der Physiologie des Menschens (1852), Vol 1, 1. Trans. Paul F. Cranefield, 'The Organic Physics of 1847 and the Biophysics of Today', Journal of the History of Medicine and Allied Sciences (1957), 12, 410.
Science quotes on:  |  Condition (119)  |  Consequence (76)  |  Function (90)

The constant conditions which are maintained in the body might be termed equilibria. That word, however, has come to have fairly exact meaning as applied to relatively simple physico-chemical states, in closed systems, where known forces are balanced. The coordinated physiological processes which maintain most of the steady states in the organism are so complex and so peculiar to living beings- involving, as they may, the brain and nerves, the heart, lungs, kidneys and spleen, all working cooperatively—that I have suggested a special designation for these states, homeostasis. The word does not imply something set and immobile, a stagnation. It means a condition-a condition which may vary, but which is relatively constant.
The Wisdom of the Body (1932), 24.
Science quotes on:  |  Homeostasis (2)

The entire human body is disposed for a vertical posture.
Science quotes on:  |  Human Body (30)  |  Posture (4)  |  Vertical (3)

The horrors of Vivisection have supplanted the solemnity, the thrilling fascination, of the old unetherized operation upon the human sufferer. Their recorded phenomena, stored away by the physiological inquisitor on dusty shelves, are mostly of as little present use to man as the knowledge of a new comet or of a tungstate of zirconium … —contemptibly small compared with the price paid for it in agony and torture.
From address to the Massachusetts Medical Society (7 Jun 1871), 'Medical Education in America', collected in Surgical Anaesthesia: Addresses, and Other Papers (1894, 1900), 309.
Science quotes on:  |  Agony (3)  |  Comet (43)  |  Comparison (53)  |  Contempt (11)  |  Dusty (3)  |  Ether (24)  |  Fascination (26)  |  Horror (6)  |  Inquisitor (6)  |  Knowledge (1128)  |  New (340)  |  Operation (96)  |  Pay (30)  |  Phenomenon (218)  |  Price (26)  |  Record (56)  |  Shelf (5)  |  Small (97)  |  Solemnity (4)  |  Store (17)  |  Sufferer (3)  |  Supplanting (2)  |  Thrill (14)  |  Torture (13)  |  Vivisection (7)  |  Zirconium (2)

The mind can quickly scan not only the past, but also the projected future consequences of a choice. Its dynamics transcend the time and space of brain physiology.
From interview collected in Pamela Weintraub (ed.), The Omni Interviews (1984), 187.
Science quotes on:  |  Brain (181)  |  Choice (64)  |  Consequence (76)  |  Dynamics (6)  |  Future (229)  |  Mind (544)  |  Past (109)  |  Predict (12)  |  Scan (3)  |  Time And Space (30)  |  Transcend (9)

The nature of the connexion between the mind and nervous matter has ever been, and must continue to be, the deepest mystery in physiology; and they who study the laws of Nature, as ordinances of God, will regard it as one of those secrets of his counsels ‘which Angels desire to look into.’
[Co-author with William Bowman]
In Robert Todd and William Bowman, The Physiological Anatomy and Physiology of Man (1845), Vol. 1, 262. Bowman was a British surgeon (1816-1892).
Science quotes on:  |  Angel (25)  |  British (5)  |  Coauthor (2)  |  Connection (86)  |  Continue (38)  |  Counsel (5)  |  Deepest (3)  |  Desire (101)  |  God (454)  |  Law (418)  |  Matter (270)  |  Mind (544)  |  Mystery (125)  |  Nature (1029)  |  Nervous (5)  |  Ordinance (2)  |  Regard (58)  |  Secret (98)  |  Study (331)  |  Surgeon (43)

The physiological combustion theory takes as its starting point the fundamental principle that the amount of heat that arises from the combustion of a given substance is an invariable quantity–i.e., one independent of the circumstances accompanying the combustion–from which it is more specifically concluded that the chemical effect of the combustible materials undergoes no quantitative change even as a result of the vital process, or that the living organism, with all its mysteries and marvels, is not capable of generating heat out of nothing.
Bemerkungen über das mechanische Aequivalent der Wärme [Remarks on the Mechanical Equivalent of Heat] (1851), 17-9. Trans. Kenneth L. Caneva, Robert Mayer and the Conservation of Energy (1993), 240.
Science quotes on:  |  Accompany (18)  |  Change (291)  |  Circumstance (48)  |  Combustion (10)  |  Conclusion (120)  |  Fundamental (122)  |  Generation (111)  |  Heat (90)  |  Independent (41)  |  Life (917)  |  Marvel (24)  |  Mystery (125)  |  Organism (126)  |  Principle (228)  |  Process (201)  |  Quantitative (15)  |  Reaction (59)  |  Theory (582)

The power of the eye could not be extended further in the opened living animal, hence I had believed that this body of the blood breaks into the empty space, and is collected again by a gaping vessel and by the structure of the walls. The tortuous and diffused motion of the blood in divers directions, and its union at a determinate place offered a handle to this. But the dried lung of the frog made my belief dubious. This lung had, by chance, preserved the redness of the blood in (what afterwards proved to be) the smallest vessels, where by means of a more perfect lens, no more there met the eye the points forming the skin called Sagrino, but vessels mingled annularly. And, so great is the divarication of these vessels as they go out, here from a vein, there from an artery, that order is no longer preserved, but a network appears made up of the prolongations of both vessels. This network occupies not only the whole floor, but extends also to the walls, and is attached to the outgoing vessel, as I could see with greater difficulty but more abundantly in the oblong lung of a tortoise, which is similarly membranous and transparent. Here it was clear to sense that the blood flows away through the tortuous vessels, that it is not poured into spaces but always works through tubules, and is dispersed by the multiplex winding of the vessels.
De Pulmonibus (1661), trans. James Young, Proceedings of the Royal Society of Medicine (1929-30), 23, 8.
Science quotes on:  |  Artery (8)  |  Blood (95)  |  Capillary (4)  |  Doubt (121)  |  Frog (30)  |  Lens (11)  |  Lung (17)  |  Membrane (11)  |  Microscope (68)  |  Skin (17)  |  Structure (191)  |  Tortoise (8)  |  Transparency (3)  |  Vein (11)  |  Vessel (21)

The soul of man is—objectively considered—essentially similar to that of all other vertebrates; it is the physiological action or function of the brain.
In Wonders of Life (1904), 12.
Science quotes on:  |  Action (151)  |  Brain (181)  |  Essentially (11)  |  Function (90)  |  Similar (22)  |  Soul (139)  |  Vertebrate (13)

The specific character of the greater part of the toxins which are known to us (I need only instance such toxins as those of tetanus and diphtheria) would suggest that the substances produced for effecting the correlation of organs within the body, through the intermediation of the blood stream, might also belong to this class, since here also specificity of action must be a distinguishing characteristic. These chemical messengers, however, or 'hormones' (from όρμάω, I excite or arouse), as we might call them, have to be carried from the organ where they are produced to the organ which they affect by means of the blood stream and the continually recurring physiological needs of the organism must determine their repeated production and circulation through the body.
'The Chemical Correlation of the Functions of the Body', The Lancet (1905), ii, 340.
Science quotes on:  |  Arouse (8)  |  Blood (95)  |  Characteristic (66)  |  Chemical (72)  |  Circulation (17)  |  Correlation (9)  |  Diphtheria (2)  |  Excite (12)  |  Hormone (7)  |  Knowledge (1128)  |  Messenger (2)  |  Need (211)  |  Organ (60)  |  Production (105)  |  Toxin (6)

The steady states of the fluid matrix of the body are commonly preserved by physiological reactions, i.e., by more complicated processes than are involved in simple physico-chemical equilibria. Special designations, therefore, are appropriate:—“homeostasis” to designate stability of the organism; “homeostatic conditions,” to indicate details of the stability; and “homeostatic reactions,” to signify means for maintaining stability.
'Physiological Regulation of Normal States: Some Tentative Postulates Concerning Biological Homeostatics', 1926. Reprinted in L. L. Langley (ed.), Homeostasis: Origins of the Concept (1973), 246.
Science quotes on:  |  Homeostasis (2)

There are those who say that the human kidney was created to keep the blood pure, or more precisely, to keep our internal environment in an ideal balanced state. This I must deny. I grant that the human kidney is a marvelous organ, but I cannot grant that it was purposefully designed to excrete urine or to regulate the composition of the blood or to subserve the physiological welfare of Homo sapiens in any sense. Rather I contend that the human kidney manufactures the kind of urine that it does, and it maintains the blood in the composition which that fluid has, because this kidney has a certain functional architecture; and it owes that architecture not to design or foresight or to any plan, but to the fact that the earth is an unstable sphere with a fragile crust, to the geologic revolutions that for six hundred million years have raised and lowered continents and seas, to the predacious enemies, and heat and cold, and storms and droughts; to the unending succession of vicissitudes that have driven the mutant vertebrates from sea into fresh water, into desiccated swamps, out upon the dry land, from one habitation to another, perpetually in search of the free and independent life, perpetually failing, for one reason or another, to find it.
From Fish to Philosopher (1953), 210-1.
Science quotes on:  |  Architecture (35)  |  Balance (43)  |  Blood (95)  |  Cold (38)  |  Composition (52)  |  Contention (7)  |  Continent (39)  |  Creation (211)  |  Crust (17)  |  Denial (13)  |  Design (92)  |  Drought (9)  |  Dry (12)  |  Earth (487)  |  Enemy (52)  |  Environment (138)  |  Excretion (4)  |  Fact (609)  |  Failure (118)  |  Fluid (18)  |  Foresight (4)  |  Free (59)  |  Fresh (21)  |  Function (90)  |  Geology (187)  |  Grant (21)  |  Habitation (3)  |  Heat (90)  |  Homo Sapiens (19)  |  Human (445)  |  Ideal (52)  |  Independent (41)  |  Internal (18)  |  Keep (47)  |  Kidney (13)  |  Land (83)  |  Life (917)  |  Lowering (4)  |  Maintenance (13)  |  Manufacturing (21)  |  Marvel (24)  |  Organ (60)  |  Perpetual (10)  |  Plan (69)  |  Predator (5)  |  Purity (13)  |  Purpose (138)  |  Raise (20)  |  Reason (330)  |  Regulation (18)  |  Revolution (56)  |  French Saying (61)  |  Sea (143)  |  Search (85)  |  Sense (240)  |  Serve (34)  |  Sphere (40)  |  State (96)  |  Storm (19)  |  Succession (39)  |  Swamp (5)  |  Unstable (8)  |  Vertebrate (13)  |  Vicissitude (4)  |  Water (244)  |  Welfare (16)

There is no existing ‘standard of protein intake’ that is based on the sure ground of experimental evidence. ... Between the two extremes of a very high and a very low protein intake it is difficult to prove that one level of intake is preferable to another. ... Physiologists, in drawing up dietary standards, are largely influenced by the dietary habits of their time and country.
Nutrition and Public Health', League of Nations Health Organization Quarterly Bulletin (1935) 4, 323–474. In Kenneth J. Carpenter, 'The Work of Wallace Aykroyd: International Nutritionist and Author', The Journal of Nutrition (2007), 137, 873-878.
Science quotes on:  |  Diet (41)  |  Evidence (157)  |  Experiment (543)  |  Habit (78)  |  Nutrition (15)  |  Protein (43)

These hormones still belong to the physiologist and to the clinical investigator as much as, if not more than, to the practicing physician. But as Professor Starling said many years ago, 'The physiology of today is the medicine of tomorrow'.
'The Reversibility of Certain Rheumatic and Non-rheumatic Conditions by the use of Cortisone or of the Pituitary Adrenocorticotropic Hormone', Nobel Lecture, 11 Dec 1950. In Nobel Lectures: Physiology or Medicine 1942- 1962 (1964), 334.
Science quotes on:  |  Hormone (7)  |  Medicine (322)

Throughout the last four hundred years, during which the growth of science had gradually shown men how to acquire knowledge of the ways of nature and mastery over natural forces, the clergy have fought a losing battle against science, in astronomy and geology, in anatomy and physiology, in biology and psychology and sociology. Ousted from one position, they have taken up another. After being worsted in astronomy, they did their best to prevent the rise of geology; they fought against Darwin in biology, and at the present time they fight against scientific theories of psychology and education. At each stage, they try to make the public forget their earlier obscurantism, in order that their present obscurantism may not be recognized for what it is.
From An Outline of Intellectual Rubbish (1937, 1943), 6. Collected in The Basic Writings of Bertrand Russell (2009), 47.
Science quotes on:  |  Anatomy (59)  |  Astronomy (175)  |  Battle (30)  |  Biology (150)  |  Clergy (3)  |  Charles Darwin (284)  |  Earlier (8)  |  Education (280)  |  Fight (37)  |  Forgeting (2)  |  Geology (187)  |  Growth (111)  |  Knowledge (1128)  |  Loss (62)  |  Mastery (20)  |  Nature (1029)  |  Obscurantism (2)  |  Present (103)  |  Prevention (29)  |  Psychology (125)  |  Public (82)  |  Recognition (62)  |  Rise (51)  |  Science (1699)  |  Science And Religion (267)  |  Sociology (31)  |  Theory (582)

To vary the compression of the muscle therefore, and so to swell and shrink it, there needs nothing but to change the consistency of the included ether… . Thus may therefore the soul, by determining this ethereal animal spirit or wind into this or that nerve, perhaps with as much ease as air is moved in open spaces, cause all the motions we see in animals.
From 'An Hypothesis explaining the Properties of Light, discoursed of in my several Papers', in Thomas Birch, The History of the Royal Society (1757), Vol. 3, 252. This was from Newton’s Second Paper on Color and Light, read at the Royal Society (9 Dec 1675).
Science quotes on:  |  Air (151)  |  Animal (309)  |  Cause (231)  |  Change (291)  |  Compression (4)  |  Consistency (21)  |  Determine (45)  |  Ether (24)  |  Motion (127)  |  Move (58)  |  Muscle (32)  |  Nerve (66)  |  Open (38)  |  Shrink (10)  |  Soul (139)  |  Space (154)  |  Spirit (113)  |  Swell (2)  |  Vary (14)  |  Wind (52)

Unhappily for the physiologist, the subjects of the principal department of his science, that of animal physiology, are sentient beings; and every experiment, every new or unusual situation of such a being, is necessarily attended by pain or suffering of a bodily or mental kind.
A Critical and Experimental Essay on the Circulation of the Blood (1831), 1.
Science quotes on:  |  Experiment (543)

We come back then to our records of nervous messages with a reasonable assurance that they do tell us what the message is like. It is a succession of brief waves of surface breakdown, each allowing a momentary leakage of ions from the nerve fibre. The waves can be set up so that they follow one another in rapid or in slow succession, and this is the only form of gradation of which the message is capable. Essentially the same kind of activity is found in all sorts of nerve fibres from all sorts of animals and there is no evidence to suggest that any other kind of nervous transmission is possible. In fact we may conclude that the electrical method can tell us how the nerve fibre carries out its function as the conducting unit of the nervous system, and that it does so by reactions of a fairly simple type.
The Mechanism of Nervous Action (1932), 21.
Science quotes on:  |  Nerve (66)

We found that each disconnected hemisphere [of the brain] was capable of sustaining its own conscious awareness, each largely oblivious of experience of the other.
As quoted in Melvin P. Shaw and Mark A. Runco (eds.), Creativity and Affect (1994), 215
Science quotes on:  |  Awareness (23)  |  Brain (181)  |  Conscious (25)  |  Experience (268)  |  Oblivious (6)

[Beyond natural history] Other biological sciences take up the study at other levels of organization: dissecting the individual into organs and tissues and seeing how these work together, as in physiology; reaching down still further to the level of cells, as in cytology; and reaching the final biological level with the study of living molecules and their interactions, as in biochemistry. No one of these levels can be considered as more important than any other.
In The Nature of Natural History (1961, 2014), 7.
Science quotes on:  |  Biochemistry (46)  |  Biology (150)  |  Cell (125)  |  Cytology (5)  |  Dissection (26)  |  Final (33)  |  Importance (183)  |  Individual (177)  |  Interaction (28)  |  Level (51)  |  Life (917)  |  Molecule (125)  |  Natural History (44)  |  Organ (60)  |  Organization (79)  |  Seeing (48)  |  Study (331)  |  Tissue (24)  |  Work (457)

[Helmholtz] is not a philosopher in the exclusive sense, as Kant, Hegel, Mansel are philosophers, but one who prosecutes physics and physiology, and acquires therein not only skill in developing any desideratum, but wisdom to know what are the desiderata, e.g., he was one of the first, and is one of the most active, preachers of the doctrine that since all kinds of energy are convertible, the first aim of science at this time. should be to ascertain in what way particular forms of energy can be converted into each other, and what are the equivalent quantities of the two forms of energy.
Letter to Lewis Campbell (21 Apr 1862). In P.M. Harman (ed.), The Scientific Letters and Papers of James Clerk Maxwell (1990), Vol. 1, 711.
Science quotes on:  |  Acquire (19)  |  Ascertain (7)  |  Conservation Of Energy (25)  |  Conversion (14)  |  Doctrine (53)  |  Equivalent (14)  |  Exclusive (9)  |  Form (210)  |  Hermann von Helmholtz (21)  |  Immanuel Kant (43)  |  Philosopher (132)  |  Physics (301)  |  Preacher (9)  |  Prosecute (3)  |  Quantity (35)  |  Sense (240)  |  Skill (50)  |  Wisdom (151)

[The] weakness of biological balance studies has aptly been illustrated by comparison with the working of a slot machine. A penny brings forth one package of chewing gum; two pennies bring forth two. Interpreted according to the reasoning of balance physiology, the first observation is an indication of the conversion of copper into gum; the second constitutes proof.
[Co-author with David Rittenberg (1906-70).]
'The Application of Isotopes to the Study of Intermediary Metabolism', Science (1938), 87, 222.
Science quotes on:  |  Balance (43)  |  Biology (150)  |  Comparison (53)  |  Constitute (19)  |  Conversion (14)  |  Copper (18)  |  Illustration (24)  |  Indication (21)  |  Interpretation (61)  |  Observation (418)  |  Penny (3)  |  Proof (192)  |  Reasoning (79)  |  Study (331)  |  Weakness (31)  |  Work (457)

“True is it, my incorporate friends,” quoth he, “That I receive the general food at first, Which you do live upon; and fit it is, Because I am the storehouse and the shop Of the whole body. But, if you do remember, I send it through the rivers of your blood, Even to the court, the heart, to th’ seat o’ th’ brain; And, through the cranks and offices of man, The strongest nerves and small inferior veins From me receive that natural competency Whereby they live. And though that all at once”— You, good friends, this says the belly, mark me.
[Told as a fable, this is the belly’s answer to a complaint from the other members of the body that it received all the food but did no work.] In Coriolanus (1623), Act 1, Scene 1, line 130-141. Webmaster’s note: The Fable of the Belly has its roots in antiquity. William Harvey delivered a lecture in Apr 1616 on his discovery the circulation of blood in the body, but did not publish until 1628.
Science quotes on:  |  Belly (3)  |  Blood (95)  |  Body (193)  |  Brain (181)  |  Circulation (17)  |  Food (139)  |  Heart (110)  |  Life (917)  |  Nerve (66)  |  Nutrition (15)  |  River (68)  |  Shop (11)  |  Small (97)  |  Stomach (18)  |  Store (17)  |  Strongest (6)  |  Vein (11)

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 |

- 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
Ralph Emerson
Robert Bunsen
Frederick Banting
Andre Ampere
Winston Churchill
- 80 -
John Locke
Bronislaw Malinowski
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
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
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
Michael Faraday
Srinivasa Ramanujan
Francis Bacon
Galileo Galilei
- 10 -
John Watson
Rosalind Franklin
Michio Kaku
Isaac Asimov
Charles Darwin
Sigmund Freud
Albert Einstein
Florence Nightingale
Isaac Newton

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