Nothing influences people more than are commendation from a trusted friend.

There are a few other things that I built when I was at Harvard that were kind of smaller versions of Facebook. One such program was this program called Match. People could enter the different courses that they were taking, and see what other courses would be correlated with the courses they are taking.

I started the site when I was 19. I didn't know much about business back then.

It's tough to say, exactly, what things will look like in three to five years, but there's a lot of work to do in just moving along the path that we've already set out.

A squirrel dying in front of your house may be more relevant to your interests right now than people dying in Africa.

I like to pride myself on thinking pretty long term, but not that long term.

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