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.

I think that people just have this core desire to express who they are. And I think that's always existed.

A guy who makes a new chair doesn't owe money to everyone who ever built a chair.

If you just work on stuff that you like and you're passionate about, you don't have to have a master plan with how things will play out.

Openness fundamentally affects a lot of the core institutions in society - the media, the economy, how people relate to the government and just their leadership.

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.

Helping a billion people connect is amazing, humbling and by far the thing I am most proud of in my life.