If we want to have the biggest impact, the best way to do this is to make sure we always focus on solving the most important problems.

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.

Every application will be designed from the ground up to use real identity and friends.

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.

I don't have an alarm clock. If someone needs to wake me up, then I have my BlackBerry next to me.

I personally don't invest in a lot of companies because I think it would be a conflict of interest and Facebook doesn't typically either.

When I'm introspective about the last few years I think the biggest mistake that we made, as a company, is betting too much on HTML5 as opposed to native... because it just wasn't there. And it's not that HTML5 is bad. I'm actually, on long-term, really excited about it. One of the things that's interesting is we actually have more people on a daily basis using mobile Web Facebook than we have using our iOS or Android apps combined. So mobile Web is a big thing for us.