I personally don't invest in a lot of companies because I think it would be a conflict of interest and Facebook doesn't typically either.

If I were starting now I would do things very differently. I didn't know anything. In Silicon Valley, you get this feeling that you have to be out here. But it's not the only place to be. If I were starting now, I would have stayed in Boston. [Silicon Valley] is a little short-term focused and that bothers me.

Virtual Reality is really a new communication platform. By feeling truly present, you can share unbounded spaces and experiences with the people in your life. Imagine sharing not just moments with your friends online, but entire experiences and adventures.

Building a mission and building a business go hand-in-hand. It is true that the primary thing that makes me excited about what we're doing is the mission, but I also think, from the very beginning, we've had this healthy understanding which is that we need to do both.

What really motivates people at Facebook is building stuff that they're proud of.

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.

VR is a very intense visual experience and having the most powerful PC is the only way to deliver certain experiences.