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Home > Category Index for Science Quotations > Category Index D > Category: Digestion

Digestion Quotes (24 quotes)

A science is not mere knowledge, it is knowledge which has undergone a process of intellectual digestion. It is the grasp of many things brought together in one, and hence is its power; for, properly speaking, it is Science that is power, not Knowledge..,
Discourses on the Scope and Nature of University Education. Addressed to the Catholics of Dublin (1852), Discourse 5, 144.
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An event experienced is an event perceived, digested, and assimilated into the substance of our being, and the ratio between the number of cases seen and the number of cases assimilated is the measure of experience.
Address, opening of 1932-3 session of U.C.H. Medical School (4 Oct 1932), 'Art and Science in medicine', The Collected Papers of Wilfred Trotter, FRS (1941), 98.
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And therefore, sir, as you desire to live,
A day or two before your laxative,
Take just three worms, nor under nor above,
Because the gods unequal numbers love.
These digestives prepare you for your purge,
Of fumetery, centaury, and spurge;
And of ground-ivy add a leaf or two.
All which within our yard or garden grow.
Eat these, and be, my lord, of better cheer:
Your father’s son was never born to fear.
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DIGESTION, n. The conversion of victuals into virtues. When the process is imperfect, vices are evolved instead—a circumstance from which that wicked writer, Dr. Jeremiah Blenn, infers that the ladies are the greater sufferers from dyspepsia.
The Collected Works of Ambrose Bierce (1911), Vol. 7, The Devil's Dictionary,  72.
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Every creature has its own food, and an appropriate alchemist with the task of dividing it ... The alchemist takes the food and changes it into a tincture which he sends through the body to become blood and flesh. This alchemist dwells in the stomach where he cooks and works. The man eats a piece of meat, in which is both bad and good. When the meat reaches the stomach, there is the alchemist who divides it. What does not belong to health he casts away to a special place, and sends the good wherever it is needed. That is the Creator's decree... That is the virtue and power of the alchemist in man.
Volumen Medicinae Paramirum (c. 1520), in Paracelsus: Essential Readings, edited by Nicholas Goodrick-Clarke (1990), 50-1.
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Facts are to the mind the same thing as food to the body. On the due digestion of facts depends the strength and wisdom of the one, just as vigor and health depend on the other. The wisest in council, the ablest in debate, and the most agreeable in the commerce of life is that man who has assimilated to his understanding the greatest number of facts.
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Facts may belong to the past history of mankind, to the social statistics of our great cities, to the atmosphere of the most distant stars, to the digestive organs of a worm, or to the life of a scarcely visible bacillus. It is not the facts themselves which form science, but the method in which they are dealt with.
From The Grammar of Science (1892), 15.
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Food is at present obtained almost entirely from the energy of the sunlight. The radiation from the sun produces from the carbonic acid in the air more or less complicated carbon compounds which serve us in plants and vegetables. We use the latent chemical energy of these to keep our bodies warm, we convert it into muscular effort. We employ it in the complicated process of digestion to repair and replace the wasted cells of our bodies. … If the gigantic sources of power become available, food would be produced without recourse to sunlight. Vast cellars, in which artificial radiation is generated, may replace the cornfields and potato patches of the world.
From 'Fifty Years Hence', Strand Magazine (Dec 1931). Reprinted in Popular Mechanics (Mar 1932), 57, No. 3, 396-397.
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HEART, n. An automatic, muscular blood- pump. Figuratively, this useful organ is said to be the seat of emotions and sentiments—a very pretty fancy which, however, is nothing but a survival of a once universal belief. It is now known that the sentiments and emotions reside in the stomach, being evolved from food by chemical action of the gastric fluid. The exact process by which a beefsteak becomes a feeling—tender or not, according to the age of the animal from which it was cut; the successive stages of elaboration through which a caviar sandwich is transmuted to a quaint fancy and reappears as a pungent epigram; the marvelous functional methods of converting a hard-boiled egg into religious contrition, or a cream-puff into a sigh of sensibility—these things have been patiently ascertained by M. Pasteur, and by him expounded with convincing lucidity. 
The Collected Works of Ambrose Bierce (1911), Vol. 7, The Devil's Dictionary,  133-134.
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I submit a body of facts which cannot be invalidated. My opinions may be doubted, denied, or approved, according as they conflict or agree with the opinions of each individual who may read them; but their worth will be best determined by the foundation on which they rest—the incontrovertible facts.
Experiments and Observations on the Gastric Juice, and the Physiology of Digestion (1833), Preface.
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Iconography becomes even more revealing when processes or concepts, rather than objects, must be depicted–for the constraint of a definite ‘thing’ cedes directly to the imagination. How can we draw ‘evolution’ or ‘social organization,’ not to mention the more mundane ‘digestion’ or ‘self-interest,’ without portraying more of a mental structure than a physical reality? If we wish to trace the history of ideas, iconography becomes a candid camera trained upon the scholar’s mind.
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In order to form for one's self a just notion of the operations which result in the production of thought, it is necessary to conceive of the brain as a peculiar organ, specially designed for the production thereof, just as the stomach is designed to effect digestion, the liver to filter the bile, the parotids and the maxillary and sublingual glands to prepare the salivary juices.
Rapports du Physique et du Moral de l'Homme (1805), 2nd edition, Vol. 1, 152-3. Translated in Robert M. Young, Mind, Brain and Adaptation in the Nineteenth Century (1970), 20.
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It has occurred to me that possibly the white corpuscles may have the office of picking up and digesting bacterial organisms when by any means they find their way into the blood. The propensity exhibited by the leukocytes for picking up inorganic granules is well known, and that they may be able not only to pick up but to assimilate, and so dispose of, the bacteria which come in their way does not seem to me very improbable in view of the fact that amoebae, which resemble them so closely, feed upon bacteria and similar organisms.
'A Contribution to the Study of the Bacterial Organisms Commonly Found Upon Exposed Mucous Surfaces and in the Alimentary Canal of Healthy Individuals', Studies from the Biological Laboratory (1883), 2, 175.
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It is possible to state as a general principle that the mesodermic phagocytes, which originally (as in the sponges of our days) acted as digestive cells, retained their role to absorb the dead or weakened parts of the organism as much as different foreign intruders.
'Uber die Pathologische Bedeutung der Intracellularen Verduung', Fortschritte der Medizin (1884), 17, 558-569. Trans. Alfred I. Tauber and Leon Chernyak, Metchnikoff and the Origins of Immunology (1991), 141.
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Laughter is a most healthful exercise; it is one of the greatest helps to digestion with which I am acquainted; and the custom prevalent among our forefathers, of exciting it at table by jesters and buffoons, was in accordance with true medical principles.
In George Moody, The English Journal of Education (1858), New Series, 12 , 411.
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Mathematics is of two kinds, Rigorous and Physical. The former is Narrow: the latter Bold and Broad. To have to stop to formulate rigorous demonstrations would put a stop to most physico-mathematical inquiries. Am I to refuse to eat because I do not fully understand the mechanism of digestion?
As quoted by Charles Melbourne Focken in Dimensional Methods and Their Applications (1953), 17.
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Should I refuse a good dinner simply because I do not understand the process of digestion?
In Electromagnetic Theory (1892), Vol. 2, 9. With this quote, he illustrates that testing a mathematically complex theory and getting accurate results has significance, even while rigorous logic in the theory is not yet plain. The mathematician may not be satisfied. The physicist meanwhile sees value based on experimental results, but does still stay aware that the theory may not be infallible.
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Since the stomach gives no obvious external sign of its workings, investigators of gastric movements have hitherto been obliged to confine their studies to pathological subjects or to animals subjected to serious operative interference. Observations made under these necessarily abnormal conditions have yielded a literature which is full of conflicting statements and uncertain results. The only sure conclusion to be drawn from this material is that when the stomach receives food, obscure peristaltic contractions are set going, which in some way churn the food to a liquid chyme and force it into the intestines. How imperfectly this describes the real workings of the stomach will appear from the following account of the actions of the organ studied by a new method. The mixing of a small quantity of subnitrate of bismuth with the food allows not only the contractions of the gastric wall, but also the movements of the gastric contents to be seen with the Röntgen rays in the uninjured animal during normal digestion.
In 'The Movements of the Stomach Studied by Means of the Röntgen Rays,' American Journal of Physiology (1898), 1, 359-360.
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The digestive canal is in its task a complete chemical factory. The raw material passes through a long series of institutions in which it is subjected to certain mechanical and, mainly, chemical processing, and then, through innumerable side-streets, it is brought into the depot of the body. Aside from this basic series of institutions, along which the raw material moves, there is a series of lateral chemical manufactories, which prepare certain reagents for the appropriate processing of the raw material.
Speech to the Society of Russian Physicians (Dec 1874). as translated in Daniel P. Todes, Pavlov’s Physiology Factory: Experiment, Interpretation, Laboratory Enterprise (2002), 155.
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The fibrous material and muscle were thus digested in the same way as the coagulated egg albumen, namely, by free acid in combination with another substance active in very small amounts. Since the latter really carries on the digestion of the most important animal nutrient materials, one might with justice apply to it the name pepsin.
'Ueber das Wesen des Verdauungsprocesses', Archiv für Anatomie, Physiologie und Wissenschaftliche Medicin (1836), 90-138. Trans. L. G. Wilson, 'The Discovery of Pepsin', in John F. Fulton and Leonard G. Wilson (eds.), Selected Readings in the History of Physiology (1966), 191.
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They hold that the function of universities is to make learning repellent and thus to prevent its becoming dangerously common. And they discharge this beneficent function all the more efficiently because they do it unconsciously and automatically. The professors think they are advancing healthy intellectual assimilation and digestion when they are in reality little better than cancer on the stomach.
Samuel Butler, Henry Festing Jones (ed.), The Note-Books of Samuel Butler (1917), 32.
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Things sweet to taste prove in digestion sour.
Louis Klopsch, Many Thoughts of Many Minds (1896), 67.
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What is man, when you come to think upon him, but a minutely set, ingenious machine for turning, with infinite artfulness, the red wine of Shiraz into urine?
'The Dreamers', Seven Gothic Tales (1943), 332.
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When you get up here in space and you go into the weightlessness environment, your body is not sure what really just happened to it. So your stomach, intestines, and that stuff kind of shuts down for a few hours to figure out what is going on and during that timeframe your body is not doing much with your food. After your body figures out that it can handle the new environment, everything cranks back up and your food, stomach and intestines and all start working like normal.
Replying to a Mifflin Middle School students’ question during a school forum held using a downlink with the Discovery Space Shuttle mission (31 Oct 1998). On NASA web page 'STS-95 Educational Downlink'. Mike Tomolillo, Philip Slater asked, “Commander Brown, how does space affect the digestive system?”
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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
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