In each of us there is a little of all of us.

If we thought more for ourselves we would have very many more bad books and very many more good ones.

There is no greater impediment to progress in the sciences than the desire to see it take place too quickly.

A book which, above all others in the world, should be forbidden, is a catalogue of forbidden books.

I am grateful that I am not as judgmental as all those censorious, self-righteous people around me. In each of us there is a little of all of us.

So-called professional mathematicians have, in their reliance on the relative incapacity of the rest of mankind, acquired for themselves a reputation for profundity very similar to the reputation for sanctity possessed by theologians.

Whenever he composes a critical review, I have been told, he gets an enormous erection.