The number of e-mails and letters that I get from choreographers, from sculptors, from composers who are being inspired by science is huge.

My best teachers were not the ones who knew all the answers, but those who were deeply excited by questions they couldn't answer.

I think the relationship between memory and time is a very deep and tricky one, to tell you the truth. I don't consider memory another sense. I do consider memory that which allows us to think that time flows.

No matter how hard you try to teach your cat general relativity, you're going to fail.

All you are is a bag of particles acting out the laws of physics. That to me is pretty clear.

We're on this planet for the briefest of moments in cosmic terms, and I want to spend that time thinking about what I consider the deepest questions.

Relativity challenges your basic intuitions that you've built up from everyday experience. It says your experience of time is not what you think it is, that time is malleable. Your experience of space is not what you think it is; it can stretch and shrink.