We've changed our internal motto from "Move fast and break things" to "Move fast with stable infrastructure."

When I started Facebook from my dorm room in 2004, the idea that my roommates and I talked about all the time was a world that was more open.

Having two identities for yourself is an example of a lack of integrity.

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

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.

Some of the best ideas throughout the company's evolution have been from places all throughout the company whether it's an engineer or someone on the customer support team. Just different areas around the company.

Our goal is not to build a platform; it's to be cross all of them.