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

In our ideals we unwittingly reveal our vices.

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.

It is horrible to see everything that one detested in the past coming back wearing the colors of the future.

We give others praise which we ourselves don't believe, as long as they respond with praise we can believe.

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

Theories pass. The frog remains.