“We have now but to prove a third attribute: I mean the faculty of feeling”
Source: The Natural History of the Soul (1745), Ch. VI Concerning the Sensitive Faculty of Matter
Context: We have now but to prove a third attribute: I mean the faculty of feeling which the philosophers of all centuries have found in this same substance.... [T]he Cartesians have made, in vain, to rob matter of this faculty. But in order to avoid insurmountable difficulties, they have flung themselves into a labyrinth from which they have thought to escape by this absurd system "that animals are pure machines."
An opinion so absurd has never gained admittance among philosophers... Experience gives us no less proof of the faculty of feeling in animals than of feeling in men.
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Julien Offray de La Mettrie 42
French physician and philosopher 1709–1751Related quotes

Source: The Natural History of the Soul (1745), Ch. VI Concerning the Sensitive Faculty of Matter
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Source: Vestiges of the Natural History of Creation (1844), p. 231
Context: Now it is possible that wants and the exercise of faculties have entered in some manner into the production of the phenomena which we have been considering; but certainly not in the way suggested by Lamarck, whose whole notion is obviously so inadequate to account for the rise of the organic kingdoms, that we only can place it with pity among the follies of the wise.