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Home > Dictionary of Science Quotations > Scientist Names Index H > Friedrich Gustav Jacob de Henle Quotes

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Friedrich Gustav Jacob de Henle
(19 Jul 1809 - 13 May 1885)

German pathologist and anatomist.

Science Quotes by Friedrich Gustav Jacob de Henle (3 quotes)

I have shown first in the course of this investigation that the infective matter is independently animate, and further that one could think of the independently animate matter as either animal and plant organisms or elementary parts of animals, which have achieved a relative individuality.
— Friedrich Gustav Jacob de Henle
'On Miasmata and Contagia', trans. G. Rosen, Bulletin of the Institute of the History of Medicine (1938), 6, 957.
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I, however, believe that for the ripening of experience the light of an intelligent theory is required. People are amused by the witticism that the man with a theory forces from nature that answer to his question which he wishes to have but nature never answers unless she is questioned, or to speak more accurately, she is always talking to us and with a thousand tongues but we only catch the answer to our own question.
— Friedrich Gustav Jacob de Henle
Quoted in Major Greenwood, Epidemiology Historical and Experimental. The Herter Lectures for 1931 (1932), 13.
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To choose a rough example, think of a thorn which has stuck in a finger and produces an inflammation and suppuration. Should the thorn be discharged with the pus, then the finger of another individual may be pricked with it, and the disease may be produced a second time. In this case it would not be the disease, not even its product, that would be transmitted by the thorn, but rather the stimulus which engendered it. Now supposing that the thorn is capable of multiplying in the sick body, or that every smallest part may again become a thorn, then one would be able to excite the same disease, inflammation and suppuration, in other individuals by transmitting any of its smallest parts. The disease is not the parasite but the thorn. Diseases resemble one another, because their causes resemble each other. The contagion in our sense is therefore not the germ or seed of the disease, but rather the cause of the disease. For example, the egg of a taenia is not the product of a worm disease even though the worm disease may have been the cause, which first gave rise to the taenia in the intestinal contents—nor of the individual afflicted with the worm disease, but rather of the parasitic body, which, no matter how it may have come into the world at first, now reproduces itself by means of eggs, and produces the symptoms of the worm disease, at least in part. It is not the seed of the disease; the latter multiplies in the sick organism, and is again excreted at the end of the disease.
— Friedrich Gustav Jacob de Henle
'On Miasmata and Contagia', trans. G. Rosen, Bulletin of the Institute of the History of Medicine (1938), 6, 924.
Science quotes on:  |  Become (821)  |  Body (557)  |  Capable (174)  |  Cause (561)  |  Choose (116)  |  Contagion (9)  |  Disease (340)  |  Egg (71)  |  End (603)  |  First (1302)  |  Germ (54)  |  Individual (420)  |  Infection (27)  |  Inflammation (7)  |  Matter (821)  |  Mean (810)  |  Means (587)  |  Organism (231)  |  Other (2233)  |  Parasite (33)  |  Produced (187)  |  Product (166)  |  Resemble (65)  |  Rise (169)  |  Seed (97)  |  Sense (785)  |  Sick (83)  |  Stimulus (30)  |  Symptom (38)  |  Think (1122)  |  Time (1911)  |  World (1850)  |  Worm (47)

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  • 19 Jul - short biography, births, deaths and events on date of Henle's birth.

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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