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.

In the olden times, privacy was good. Today people want to share, people are more open.

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.

There are many machines throughout history that were built to do something better than a human can.

I don't want to be in a situation where I have to leave some other commitment or worse I am rude and someone else has to support my stuff. I stopped coding for Facebook a while ago.

The biggest risk is not taking any risk.

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.