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

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.

The point of Facebook isn't the features, it's the people.

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

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.

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

I think video is a mega trend, almost as big as mobile.