I think Nature's imagination is so much greater than man's, she's never gonna let us relax!

It's because somebody knows something about it that we can't talk about physics. It's the things that nobody knows anything about we can discuss.

In a way, the Nobel Prize has been something of a pain in the neck, though there was at least one time that I got some fun out of it, Shortly after I won the Prize, Gweneth and I received an invitation from the Brazilian government to be the guests of honor at the Carnaval celebrations in Rio.

It is necessary for the very existence of science that minds exist which do not allow that nature must satisfy some preconceived conditions.

A scientist is never certain. ... We absolutely must leave room for doubt or there is no progress and there is no learning.

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

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.