The human mind has first to construct forms, independently, before we can find them in things.

Not until the creation and maintenance of decent conditions of life for all men are recognized and accepted as a common obligation of all men and all countries — not until then shall we, with a certain degree of justification, be able to speak of mankind as civilized.

Raffiniert ist der Herr Gott, aber boshaft ist er nicht. God is subtle, but he is not malicious.

Genius is 1% talent and 99% percent hard work.

The formulation of the problem is often more essential than its solution, which may be merely a matter of mathematical or experimental skill.

I made one great mistake in my life-when I signed the letter to President Roosevelt recommending that atom bombs be made but there was some justification-the danger that the Germans would make them.

As a human being, one has been endowed with just enough intelligence to be able to see clearly how utterly inadequate that intelligence is when confronted with what exists.