What really motivates people at Facebook is building stuff that they're proud of.

Having two identities for yourself is an example of a lack of integrity.

People often say that it is easier to predict the way things are going to be 10 to 20 years in the future than to predict how it is going to be 3 years from now.

If you don't risk anything you risk everything

You hear these stories about people who take apart their radio and put it back. Or just learn a lot from taking it apart. But I wasn't as into that stuff as I was just into how computer programs work.

The most important thing is to keep your team as small as possible.

I think as a company, if you can get two things right--having a clear direction on what you are trying to do and bringing in great people who can execute on the stuff--then you can do pretty well.