The individual must not merely wait and criticize, he must defend the cause the best he can. The fate of the world will be such as the world deserves.

In the shadow of the atomic bomb it has become even more apparent that all men are, indeed, brothers.

Fear or stupidity has always been the basis of most human actions.

God is clever, but not dishonest.

Make everything as simple as possible, but not simpler.

An autocratic system of coercion, in my opinion, soon degenerates. For force always attracts men of low morality, and I believe it to be an invariable rule that tyrants of genius are succeeded by scoundrels. For this reason I have always been passionately opposed to systems such as we see in Italy and Russia to-day.

It is really a puzzle what drives one to take one's work so devilishly seriously.