What most experimenters take for granted before they begin their experiments is infinitely more interesting than any results to which their experiments lead.

Progress imposes not only new possibilities for the future but new restrictions. It seems almost as if progress itself and our fight against the increase of entropy intrinsically must end in the downhill path from which we are trying to escape.

A painter like Picasso, who runs through many periods and phases, ends up by saying all those things which are on the tip of the tongue of the age to say, and finally sterilizes the originality of his contemporaries and juniors.

The best material model of a cat is another, or preferably the same, cat.

We have modified our environment so radically that we must now modify ourselves to exist in this new environment.

Any labor which competes with slave labor must accept the economic conditions of slave labor.

In all important respects, the man who has nothing but his physical power to sell has nothing to sell which it is worth anyone's money to buy