If I were starting now I would do things very differently. I didn't know anything. In Silicon Valley, you get this feeling that you have to be out here. But it's not the only place to be. If I were starting now, I would have stayed in Boston. [Silicon Valley] is a little short-term focused and that bothers me.

Why are most chess masters under 30?

Connecting the world is really important, and that is something that we want to do. That is why Facebook is here on this planet.

With some of the issues around the Snowden leaks and what the NSA was doing I think have scared people around the world and I think in many ways rightfully so.

There is something wrong with our system when I can leave here and make billions of dollars in 10 years while millions of students can't even afford to pay off their loans, let alone start a business. We all know you don't get successful just by having a good idea or working hard. You get successful by being lucky too. If I had to support my family growing up, instead of having the time to learn how to code. If I didn't know that I was gonna be fine if Facebook didn't work out, then I wouldn't be standing up here today. And if we're honest, we all know how much luck we've had.

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.

It is important for young entrepreneurs to be adequately self-aware to know what they do not know.