It is in the compelling zest of high adventure and of victory, and in creative action, that man finds his supreme joys.

Do not let it be your aim to be something, but to be someone.

I believe that every right implies a responsibility; every opportunity, an obligation; every possession, a duty.

Toleration is the greatest gift of the mind; it requires the same effort of the brain that it takes to balance oneself on a bicycle.

The original reason to start the project, which was that the Germans were a danger, started me off on a process of action, which was to try to develop this first system at Princeton and then at Los Alamos, to try to make the bomb work.