You have no responsibility to live up to what other people think you ought to accomplish. I have no responsibility to be like they expect me to be. It's their mistake, not my failing.

Physics is to mathematics what sex is to masturbation.

Fall in love with some activity, and do it! Nobody ever figures out what life is all about, and it doesn't matter.

If there is something very slightly wrong in our definition of the theories, then the full mathematical rigor may convert these errors into ridiculous conclusions.

You should not fool the laymen when you're talking as a scientist... . I'm talking about a specific, extra type of integrity that is not lying, but bending over backwards to show how you're maybe wrong, [an integrity] that you ought to have when acting as a scientist. And this is our responsibility as scientists, certainly to other scientists, and I think to laymen.

As revealed by physics, the truth is so remarkable, so amazing!

The game I play is a very interesting one. It's imagination, in a tight straightjacket.