One cannot understand... the universality of laws of nature, the relationship of things, without an understanding of mathematics. There is no other way to do it.

I don't feel frightened by not knowing things.

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

There are 10^11 stars in the galaxy. That used to be a huge number. But it's only a hundred billion. It's less than the national deficit! We used to call them astronomical numbers. Now we should call them economical numbers.

This is not very important what I'm doing. I'm just proving something.

The truth always turns out to be simpler than you thought.

The problem of creating something new, but which is consistent with everything which has been seen before, is one of extreme difficulty.