Instinct guides the animal better than the man. In the animal it is pure, in man it is led astray by his reason and intelligence.
Denis DiderotA thing is not proved because no one has ever questioned it... Skepticism is the first step toward truth.
Denis DiderotOne must be oneself very little of a philosopher not to feel that the finest privilege of our reason consists in not believing in anything by the impulsion of a blind and mechanical instinct, and that it is to dishonour reason to put it in bonds as the Chaldeans did. Man is born to think for himself.
Denis Diderot