Of course the Silicon Valley is unique and Berlin is not yet comparable. But of all the different cities that are building a startup infrastructure, Berlin is the one with the most similar energy.

By giving people the power to share, we're making the world more transparent.

All of my friends who have younger siblings who are going to college or high school - my number one piece of advice is: You should learn how to program.

It only took me two weeks to build the first version of Facebook because I had so much stuff before then.

On engagement, we're already seeing that mobile users are more likely to be daily active users than desktop users. They're more likely to use Facebook six or seven days of the week.

Facebook is inherently viral.

The real question for me is, do people have the tools that they need in order to make those decisions well? And I think that it's actually really important that Facebook continually makes it easier and easier to make those decisions... If people feel like they don't have control over how they're sharing things, then we're failing them.