Revolution is an art that I pursue rather than a goal I expect to achieve. Nor is this a source of dismay; a lost cause can be as spiritually satisfying as a victory.

There is no worse tyranny than to force a man to pay for what he does not want merely because you think it would be good for him.

Little girls, like butterflies, need no excuse.

It was equally imperative that this chain of reactions should always tend to dampen, to die out. It must not build up, or the uranium mass would explode within a time interval too short to be measured by any means whatsoever. Nor would there be anyone left to measure it.

It's amazing how much 'mature wisdom' resembles being too tired.

Avoid making irrevocable decisions while tired or hungry.

I have never been impressed by the formal schools of ethics.