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

At Facebook, we're inspired by technologies that have revolutionized how people spread and consume information. We often talk about inventions like the printing press and the television - by simply making communication more efficient, they led to a complete transformation of many important parts of society. They gave more people a voice. They encouraged progress. They changed the way society was organized. They brought us closer together.

The companies that work are the ones that people really care about and have a vision for the world so do something you like.

Building a mission and building a business go hand-in-hand. It is true that the primary thing that makes me excited about what we're doing is the mission, but I also think, from the very beginning, we've had this healthy understanding which is that we need to do both.

It is important for young entrepreneurs to be adequately self-aware to know what they do not know.

If we want to have the biggest impact, the best way to do this is to make sure we always focus on solving the most important problems.

I don't have an alarm clock. If someone needs to wake me up, then I have my BlackBerry next to me.