Whenever I go to a new city, in order to help get on the right time zone and actually get a chance to see that city, I like running.

There are a few other things that I built when I was at Harvard that were kind of smaller versions of Facebook.

There is a huge need and a huge opportunity to get everyone in the world connected, to give everyone a voice and to help transform society for the future. The scale of the technology and infrastructure that must be built is unprecedented, and we believe this is the most important problem we can focus on.

I try to shrug it off as a minor annoyance that whenever I do something successful, every capitalist out there wants a piece of the action.

The unsupervised learning is the way most people will learn in the future. You have this model of how the world works in your head and you're refining it to predict what you think is going to happen in the future.

Right now, with social networks and other tools on the Internet, all of these 500 million people have a way to say what they're thinking and have their voice be heard.

I think that people just have this core desire to express who they are. And I think that's always existed.