Whether man is disposed to yield to nature or to oppose her, he cannot do without a correct understanding of her language

It is not easy to imagine how little interested a scientist usually is in the work of any other, with the possible exception of the teacher who backs him or the student who honors him.

In order to remain true to oneself one ought to renounce one's party three times a day.

Already at the origin of the species man was equal to what he was destined to become.

One must either take an interest in the human situation or else parade before the void.

To say of men that they are bad is to say they are worse than we think we are, or worse than the ideal man whose image we have built up on the basis of a certain few.

I prefer the honest jargon of reality to the outright lies of books.