When I look around the world and see so many countries turning people away, I think it is terrible. And I know that these are all issues that Germany is culturally dealing with in terms of integration but it is just something that I deeply admire.

I don't have an alarm clock. If someone needs to wake me up, then I have my BlackBerry next to me.

I think there's confusion around what the point of social networks is. A lot of different companies characterized as social networks have different goals - some serve the function of business networking, some are media portals. What we're trying to do is just make it really efficient for people to communicate, get information and share information.

I started the site when I was 19. I didn't know much about business back then.

If you don't risk anything you risk everything

I don't want to be in a situation where I have to leave some other commitment or worse I am rude and someone else has to support my stuff. I stopped coding for Facebook a while ago.

Why are most chess masters under 30?