A great novel is one that changes the reader, that leaves him different after the last page.

I'm not going to sit here and say I'm a role model or anything, but I do think I have a responsibility.

The more you know, the less you need to show.

The only way to have a good day is to start it with a positive attitude.

Mathematics is the art of giving the same name to different things.

Two possibilities exist: either we are alone in the Universe or we are not. Both are equally terrifying.