It is not science that has destroyed the world, despite all the gloomy forebodings of the earlier prophets. It is man who has destroyed man.

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

In our culture we make heroes of the men who sit on top of a heap of money, and we pay attention not only to what they say in their field of competence, but to their wisdom on every other question in the world.

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

The problem of freedom in America is that of maintaining a competition of ideas, and you do not achieve that by silencing one brand of idea.

The best thing about lying in bed late is that you learn to distinguish between first things and trivia, for whatever presses on you has to prove its importance before it makes you move.

It is almost as easy to be enervated by triumph as by defeat.