The biggest risk is not taking any risk... In a world that changing really quickly, the only strategy that is guaranteed to fail is not taking risks.

Facebook is inherently viral.

Facebook was not originally created to be a company. It was built to accomplish a social mission - to make the world more open and connected.

When people are connected, we can just do some great things. They have the opportunity to get access to jobs, education, health, communications. We have the opportunity to bring the people we care about closer to us.

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.

With some of the issues around the Snowden leaks and what the NSA was doing I think have scared people around the world and I think in many ways rightfully so.

We are working hard to build a service that everyone, everywhere can use, whether they are a person, a company, a president or an organisation working for change