Young people are just smarter.

In a world that's changing so quickly, you're guaranteed to fail if you don't take any risks.

Simply put: we don't build services to make money; we make money to build better services.

It used to be the case, like, you'd switch jobs, and then maybe you wouldn't keep in touch with all the people that you knew from that old job. Just because it was too hard. But one of the things that Facebook does is it makes it really easy to just stay in touch with all these people.

All of my friends who have younger siblings who are going to college or high school - my number one piece of advice is: You should learn how to program.

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

Facebook is inherently viral.