I think a simple rule of business is, if you do the things that are easier first, then you can actually make a lot of progress.

You hear these stories about people who take apart their radio and put it back. Or just learn a lot from taking it apart. But I wasn't as into that stuff as I was just into how computer programs work.

Advertising works most effectively when it's in line with what people are already trying to do.

If Facebook were a country, it would be the 8th most populated in the world, just ahead of Japan.

We have a pretty ambitious goal for the world. What we think will make the Web better. What we think will make all these businesses that integrate with us run more effectively. I think if we stay focused on doing that, that's really the main thing that we need to do.

Berlin is one of my favorite cities in the world. I feel like the energy is very youthful. It has such an important history, including its recent history of unification.

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.