People can be really smart or have skills that are directly applicable, but if they don't really believe in it, then they are not going to really work hard.

People often say that it is easier to predict the way things are going to be 10 to 20 years in the future than to predict how it is going to be 3 years from now.

Our work to improve privacy continues today.

Think about what people are doing on Facebook today. They're keeping up with their friends and family, but they're also building an image and identity for themselves, which in a sense is their brand. They're connecting with the audience that they want to connect to. It's almost a disadvantage if you're not on it now.

More than four million businesses have Pages on Facebook that they use to have a dialogue with their customers.

We want Facebook to be one of the best places people can go to learn how to build stuff. If you want to build a company, nothing better than jumping in and trying to build one. But Facebook is also great for entrepreneurs/hackers. If people want to come for a few years and move on and build something great, that's something we're proud of.

We used to write this down by saying, 'move fast and break things.' And the idea was, unless you are breaking some stuff you are not moving fast enough. I think there's probably something in that for other entrepreneurs to learn which is that making mistakes is okay. At the end of the day, the goal of building something is to build something, not to not make mistakes.