'It worked.' (said after witnessing the first atomic detonation).

If we ask, for instance, whether the position of the electron remains the same, we must say 'no'; if we ask whether the electron's position changes with time, we must say 'no'; if we ask whether the electron is at rest, we must say 'no'; if we ask whether it is in motion, we must say 'no'.

When you see something that is technically sweet you go ahead and do it.

There are children playing in the streets who could solve some of my top problems in physics, because they have modes of sensory perception that I lost long ago.

We know that the wages of secrecy are corruption. We know that in secrecy error, undetected, will flourish and subvert.

It is perfectly obvious that the whole world is going to hell. The only possible chance that it might not is that we do not attempt to prevent it from doing so.

Truth, not a pet, is man's best friend.