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

I look at Google and think they have a strong academic culture. Elegant solutions to complex problems.

By giving people the power to share, we're making the world more transparent.

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.

We've changed our internal motto from "Move fast and break things" to "Move fast with stable infrastructure."

Google, I think, in some ways, is more competitive and certainly is trying to build their own little version of Facebook.

If you want to be free, or you want to preserve freedom for people, you both need to have laws that make it so people have freedom of speech and all the freedoms that they need. You also need to have an open governance system where people can vote and people have representation.