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.

The world isn't set up equally, and the first billion people using Facebook have way more money than the rest of the world combined.

People wait until late in their career to give back. But why wait when there is so much to be done?

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.

If things aren’t breaking, then you’re not moving fast enough. People learn by making mistakes.

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

A squirrel dying in front of your house may be more relevant to your interests right now than people dying in Africa.