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.

There is a huge need and a huge opportunity to get everyone in the world connected, to give everyone a voice and to help transform society for the future. The scale of the technology and infrastructure that must be built is unprecedented, and we believe this is the most important problem we can focus on.

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

There's a difference between being obsessed and being motivated.

Helping a billion people connect is amazing, humbling and by far the thing I am most proud of in my life.

You know, you really don't need a forensics team to get to the bottom of this. If you guys were the inventors of Facebook, you'd have invented Facebook.

The point of Facebook isn't the features, it's the people.