The fact that there is nothing permanent except change is a permanent theme in nature.

I want to liberate my fans and let them know they don't have to be perfect.

You have to be willing to take risks and make bold moves to succeed in business.

The work is never finished until it's in the world.

Mathematics is the music of reason.

Incentives matter because they guide behavior in predictable ways.

我们不是在制造电脑的行业；我们是在制造伟大软件的行业。