The world is changing so quickly, with mobile stuff and different platforms emerging, that I think it's more likely that the biggest competitor for Facebook is someone that we haven't heard of. What that means for us is that we should just really stay focused on what we're doing.

Nothing influences people more than are commendation from a trusted friend.

If the original Facebook was the first five minutes [of a conversation] and the stream was the next 15, what I want to show you today is the rest-the next few hours of a deep engaging conversation.

I think a simple rule of business is, if you do the things that are easier first, then you can actually make a lot of progress.

Why are most chess masters under 30?

We are working hard to build a service that everyone, everywhere can use, whether they are a person, a company, a president or an organisation working for change

I literally coded Facebook in my dorm room and launched it from my dorm room. I rented a server for $85 a month, and I funded it by putting an ad on the side, and we've funded ever since by putting ads on the side.