At Facebook, we build tools to help people connect with the people they want and share what they want, and by doing this we are extending people's capacity to build and maintain relationships.

It only took me two weeks to build the first version of Facebook because I had so much stuff before then.

In addition to building better products, a more open world will also encourage businesses to engage with their customers directly and authentically. More than four million businesses have Pages on Facebook that they use to have a dialogue with their customers. We expect this trend to grow as well.

Find that thing you are super passionate about. A lot of founding principles of Facebook are that if people have access to more information and are more connected, it will make the world better; people will have more understanding, more empathy. That’s the guiding principle for me. On hard days, I really just step back, and that’s the thing that keeps me going.

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

A guy who makes a new chair doesn't owe money to everyone who ever built a chair.

In the olden times, privacy was good. Today people want to share, people are more open.