Move fast and break things. Unless you are breaking stuff, you are not moving fast enough.

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.

By giving people the power to share, we're making the world more transparent.

Our mission is to make the world more open and connected. We do this by giving people the power to share whatever they want and be connected to whoever they want, no matter where they are.

I think that more flow of information, the ability to stay connected to more people makes people more effective as people. And I mean, that's true socially. It makes you have more fun, right. It feels better to be more connected to all these people. You have a richer life.

If you don't risk anything you risk everything

There are a few other things that I built when I was at Harvard that were kind of smaller versions of Facebook.