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

People think innovation is just having a good idea but a lot of it is just moving quickly and trying a lot of things.

Of course, hate speech and racism have no place on Facebook

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.

This is a perverse thing, personally, but I would rather be in the cycle where people are underestimating us. It gives us latitude to go out and make big bets that excite and amaze people.

My number one piece of advice is: you should learn how to program.

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.