In a lot of ways Berlin is a symbol for me of Facebook's mission: bringing people together, connecting people and breaking down boundaries.

The basis of our partnership strategy and our partnership approach: We build the social technology. They provide the music.

There are a few other things that I built when I was at Harvard that were kind of smaller versions of Facebook.

So many businesses get worried about looking like they might make a mistake, they become afraid to take any risk.

Facebook is uniquely positioned to answer questions that people have, like, what sushi restaurants have my friends gone to in New York lately and liked? These are queries you could potentially do with Facebook that you couldn't do with anything else, we just have to do it.

There is a huge need and a huge opportunity to get everyone in the world connected, to give everyone a voice and to help transform society for the future. The scale of the technology and infrastructure that must be built is unprecedented, and we believe this is the most important problem we can focus on.

Move fast and break things. Unless you are breaking stuff, you are not moving fast enough.