Knowing what you don't know is more useful than being brilliant.

We have a passion for keeping things simple.

Mankind invented a system to cope with the fact that we are so intrinsically lousy at manipulating numbers. It's called the graph.

I have a black belt in chutzpah. I was born with it. Some people, like some of the women I know, have a black belt in spending. They were born with that. But what they gave me was a black belt in chutzpah.

Missing out on some opportunity never bothers us. What's wrong with someone getting a little richer than you? It's crazy to worry about this.

You've got to have models in your head and you've got to array you experience - both vicarious and direct - onto this latticework of mental models.

If you can get good at destroying your own wrong ideas, that is a great gift.