We want Facebook to be one of the best places people can go to learn how to build stuff.

The companies that work are the ones that people really care about and have a vision for the world so do something you like.

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.

This is a perverse thing, personally, but I would rather be in the cycle where people are underestimating us. It gives us latitude to go out and make big bets that excite and amaze people.

We want Facebook to be one of the best places people can go to learn how to build stuff.

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

The question isn't, 'What do we want to know about people?', It's, 'What do people want to tell about themselves?'