Physics is to mathematics what sex is to masturbation.

It does not make any difference how beautiful your guess is. It does not make any difference how smart you are, who made the guess, or what his name is if it disagrees with experiment it is wrong. That is all there is to it.

Science is like sex: sometimes something useful comes out, but that is not the reason we are doing it

What is not surrounded by uncertainty cannot be the truth.

Poets say science takes away from the beauty of the stars - mere globs of gas atoms. I, too, can see the stars on a desert night, and feel them. But do I see less or more?

The electron is a theory. But the theory is so good we can almost consider them real.

We are lucky to live in an age in which we are still making discoveries.