We are trying to prove ourselves wrong as quickly as possible, because only in that way can we find progress.

I think I can safely say that nobody understands Quantum Mechanics.

(Joan,1941) She wrote me a letter asking,"How can I read it?,Its so hard." I told her to start at the beginning and read as far as you can get until you're lost. Then start again at the beginning and keep working through until you can understand the whole book. And thats what she did

Strange! I don't understand how it is that we can write mathematical expressions and calculate what the thing is going to do without being able to picture it.

Physics is to mathematics what sex is to masturbation.

If a guy tells me the probability of failure is 1 in 100,000, I know he's full of crap.

Nature...cannot be fooled!