The trick isn't adding stuff, it's taking away.

People can be really smart or have skills that are directly applicable, but if they don't really believe in it, then they are not going to really work hard.

If the original Facebook was the first five minutes [of a conversation] and the stream was the next 15, what I want to show you today is the rest-the next few hours of a deep engaging conversation.

When I was in college I did a lot of stupid things and I don't want to make an excuse for that. Some of the things that people accuse me of are true, some of them aren't. There are pranks, IMs.

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

It only took me two weeks to build the first version of Facebook because I had so much stuff before then.

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.