The ability to share whole scenes form our lives will be a valuable thing over time.

Facebook is uniquely positioned to answer questions that people have, like, what sushi restaurants have my friends gone to in New York lately and liked? These are queries you could potentially do with Facebook that you couldn't do with anything else, we just have to do it.

If you actually do something you love it's a lot easier and takes on a lot more purpose.

All of my friends who have younger siblings who are going to college or high school - my number one piece of advice is: You should learn how to program.

The question I ask myself like almost every day is: ‘Am I doing the most important thing I could be doing?' Unless I feel like I’m working on the most important problem that I can help with, then I’m not going to feel good about how I’m spending my time. And that’s what this company is.

Companies face a handful of different risks, whether it is competitors or different market environments. But I think that people focus way too much on competitors and not enough on their own execution.

The thing I really care about is the mission, making the world open.