Connectivity just can't be a privilege for people in the richest countries. We believe that connecting everyone in the world is one of the great challenges of our generation, and that's why we are happy to play whatever small part in that that we can.

I mean, we've built a lot of products that we think are good, and will help people share photos and share videos and write messages to each other. But it's really all about how people are spreading Facebook around the world in all these different countries. And that's what's so amazing about the scale that it's at today.

If you look at the history of our country over the last 100 years, there have been periods where science and research have been celebrated. They were really kind of held up as heroes in society, which encouraged a generation of people to go into these fields.

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

I think that the tax situation needs to be worked out between the countries themselves.

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.