Right now, with social networks and other tools on the Internet, all of these 500 million people have a way to say what they're thinking and have their voice be heard.

The days of you having a different image for your work friends or co-workers and for the other people you know are probably coming to an end pretty quickly. Having two identities for yourself is an example of a lack of integrity.

In terms of doing work and in terms of learning and evolving as a person, you just grow more when you get more people's perspectives... I really try and live the mission of the company and... keep everything else in my life extremely simple.

There are a few other things that I built when I was at Harvard that were kind of smaller versions of Facebook.

And connected is helping people stay in touch and maintain empathy for each other, and bandwidth.

The ability to share whole scenes form our lives will be a valuable thing over time.

The thing I really care about is the mission, making the world open.