Nothing happens until something moves.

An expert is a person who has few new ideas; a beginner is a person with many.

I refuse to engage in an intellectual battle with an unarmed man.

We cannot resolve the problems of the world by unsing the same techniques that have created them.

[There is] a duty in refusing to cooperate in any undertaking that violates the Constitutional rights of the individual. This holds in particular for all inquisitions that are concerned with the private life and the political affiliations of the citizens.

Man owes his strength in the struggle for existence to the fact that he is a social animal.

When I was a fairly precocious young man I became thoroughly impressed with the futility of the hopes and strivings that chase most men restlessly through life. Moreover, I soon discovered the cruelty of that chase, which in those years was much more carefully covered up by hypocrisy and glittering words than is the case today. By the mere existence of his stomach everyone was condemned to participate in that chase. The stomach might well be satisfied by such participation, but not man insofar as he is a thinking and feeling being.