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Who said: “Every body perseveres in its state of being at rest or of moving uniformly straight forward, except insofar as it is compelled to change its state by forces impressed.”
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Home > Dictionary of Science Quotations > Scientist Names Index W > Caspar Friedrich Wolff Quotes

Caspar Friedrich Wolff
(18 Jan 1734 - 22 Feb 1794)

German physiologist known as the 'founder of modern embryology.'


Science Quotes by Caspar Friedrich Wolff (1 quote)

He who wishes to explain Generation must take for his theme the organic body and its constituent parts, and philosophize about them; he must show how these parts originated, and how they came to be in that relation in which they stand to each other. But he who learns to know a thing not only from its phenomena, but also its reasons and causes; and who, therefore, not by the phenomena merely, but by these also, is compelled to say: “The thing must be so, and it cannot be otherwise; it is necessarily of such a character; it must have such qualities; it is impossible for it to possess others”—understands the thing not only historically but truly philosophically, and he has a philosophic knowledge of it. Our own Theory of Generation is to be such a philosphic comprehension of an organic body, a very different one from one merely historical. (1764)
— Caspar Friedrich Wolff
Quoted as an epigraph to Chap. 2, in Ernst Haeckel, The Evolution of Man, (1886), Vol 1, 25.
Science quotes on:  |  Body (537)  |  Cause (542)  |  Character (243)  |  Comprehension (66)  |  Constituent (45)  |  Different (577)  |  Explain (322)  |  Generation (242)  |  Historical (70)  |  Impossible (253)  |  Know (1519)  |  Knowledge (1536)  |  Learn (632)  |  Merely (316)  |  Must (1526)  |  Necessarily (135)  |  Organic (158)  |  Other (2236)  |  Possess (156)  |  Reason (744)  |  Say (984)  |  Show (346)  |  Stand (274)  |  Theme (17)  |  Theory (972)  |  Thing (1915)  |  Truly (116)  |  Understand (607)


See also:
  • 18 Jan - short biography, births, deaths and events on date of Wolff's birth.

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