Work as hard and as much as you want to on the things you like to do the best.

I find that teaching and the students keep life going, and I would never accept any position in which somebody has invented a happy situation for me where I don't have to teach. Never.

It is not unscientific to make a guess, although many people who are not in science think it is.

No one really understands quantum mechanics.

For those who want some proof that physicists are human, the proof is in the idiocy of all the different units which they use for measuring energy.

What I am going to tell you about is what we teach our physics students in the third or fourth year of graduate school... It is my task to convince you not to turn away because you don't understand it. You see my physics students don't understand it... That is because I don't understand it. Nobody does.

Everybody who reasons carefully about anything is making a contribution ... and if you abstract it away and send it to the Department of Mathematics they put it in books.