The trust of the innocent is the liar's most useful tool.

Working on a new idea is kind of like getting married. Then a new idea comes along and you think, 'Man, I'd really like to go out with her.' But you can't. At least not until the old idea is finished.

You can go through your whole life telling yourself that life is logical, life is prosaic, life is sane. Above all sane. And I think it is. I've had a lot of time to think about that. And what I keep coming back to is [her] dying declaration: 'So you understand that when we increase the number of variables, the axioms themselves never change.'

Want to know the best thing about teaching? Seeing that moment when a kid discovers his or her gift. There's no feeling on earth like it.

A product can be quickly outdated, but a successful brand is timeless.

Overhead was a sky blacker than jewlers' velvet, and a billion stars screamed down.

Don't give me what I ask for, give me what I need.