I have a simple principle for the conduct of life- never to resist an adequate temptation.

Man must be at once more humble and more confident; more humble in the face of destructive potentials of what he can achieve, more confident of his own humanity as against computers and robots which are only engines to simulate him.

The crime of book purging is that it involves a rejection of the word. For the word is never absolute truth, but only man's frail and human effort to approach the truth. To reject the word is to reject the human search.

Power politics existed before Machiavelli was ever heard of; it will exist long after his name is only a faint memory. What he did, like Harvey, was to recognize its existence and subject it to scientific study.

If you mean by capitalism the God-given right of a few big corporations to make all the decisions that will affect millions of workers and consumers and to exclude everyone else from discussing and examining those decisions, then the unions are threatening capitalism.

In the end, as any successful teacher will tell you, you can only teach the things that you are. If we practice racism then it is racism we teach.

Man's will creates the things that paralyze his brain and brutalize his heart.