Only a monomaniac gets anything done.

America is today the hope of all honorable men who respect the rights of their fellow men and who believe in the principle of freedom and justice.

It is only men who are free, who create the inventions and intellectual works which to us moderns make life worth while.

When the number of factors coming into play in a phenomenological complex is too large scientific method in most cases fails. One need only think of the weather, in which case the prediction even for a few days ahead is impossible.

What I'm really interested in is whether God could have made the world in a different way; that is, whether the necessity of logical simplicity leaves any freedom at all.

Nothing happens til something moves.

I don't know what weapons will be used in the Third World War. But I can tell you what they'll use in the Fourth - rocks!