Physics is to mathematics what sex is to masturbation.

What is necessary for 'the very existence of science,' and what the characteristics of nature are, are not to be determined by pompous preconditions, they are determined always by the material with which we work, by nature herself. We look, and we see what we find, and we cannot say ahead of time successfully what it is going to look like. ... It is necessary for the very existence of science that minds exist which do not allow that nature must satisfy some preconceived conditions.

There's plenty of room at the bottom.

There is one simplification at least. Electrons behave ... in exactly the same way as photons; they are both screwy, but in exactly in the same way.

It is the fact that the electrons cannot all get on top of each other that makes tables and everything else solid.

The "paradox" is only a conflict between reality and your feeling of what reality "ought to be."

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