I hope that Facebook and other Internet technologies were able to help people, just like we hope that we help them communicate and organize and do whatever they want to every single day, but I don't pretend that if Facebook didn't exist, that this wouldn't even be possible. Of course, it would have.

When you want to change things, you can't please everyone. If you do please everyone, you aren't making enough progress.

You grow more when you get more people's perspective.

Look at the way celebrities and politicians are using Facebook already. When Ashton Kutcher posts a video, he gets hundreds of pieces of feedback. Maybe he doesn't have time to read them all or respond to them all, but he's getting good feedback and getting a good sense of how people are thinking about that and maybe can respond to some of it.

If you're always under the pressure of real identity, I think that is somewhat of a burden.

We also have a dog. His name's Beast. He's a sheepdog. He's super cute. I love him.

The biggest risk is not taking any risk... In a world that changing really quickly, the only strategy that is guaranteed to fail is not taking risks.