The first principle is that you must not fool yourself and you are the easiest person to fool.

We decided that 'trivial' means 'proved'. So we joked with the mathematicians: We have a new theorem- that mathematicians can prove only trivial theorems, because every theorem that's proved is trivial.

What Do You Care What Other People Think?

It doesn't matter how beautiful your theory is, it doesn't matter how smart you are. If it doesn't agree with experiment, it's wrong.

I was born not knowing and have had only a little time to change that here and there.

You see, I get such fun out of thinking that I don't want to destroy this most pleasant machine that makes life such a big kick.

This attitude of mind - this attitude of uncertainty - is vital to the scientist, and it is this attitude of mind which the student must first acquire. It becomes a habit of thought. Once acquired, we cannot retreat from it anymore.