There are many machines throughout history that were built to do something better than a human can.

We've changed our internal motto from "Move fast and break things" to "Move fast with stable infrastructure."

If things aren’t breaking, then you’re not moving fast enough. People learn by making mistakes.

When I was in college, I remember thinking to myself, this internet thing is awesome because you can look up anything you want, you can read news, you can download music, you can watch movies, you can find information on Google, you can get reference material on Wikipedia, except the thing that is most important to humans, which is other people, was not there.

Facebook was not originally created to be a company. It was built to accomplish a social mission - to make the world more open and connected.

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're always under the pressure of real identity, I think that is somewhat of a burden.