The world isn't set up equally, and the first billion people using Facebook have way more money than the rest of the world combined.

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.

I made so many mistakes in running the company so far, basically any mistake you can think of I probably made. I think, if anything, the Facebook story is a great example of how if you're building a product that people love you can make a lot of mistakes

Helping a billion people connect is amazing, humbling and by far the thing I am most proud of in my life.

The thing I really care about is the mission, making the world open.

We have a pretty ambitious goal for the world. What we think will make the Web better. What we think will make all these businesses that integrate with us run more effectively. I think if we stay focused on doing that, that's really the main thing that we need to do.

If you don't risk anything you risk everything