There are many machines throughout history that were built to do something better than a human can.

The thing that we are trying to do at Facebook is just help people connect and communicate more efficiently.

The primary things that people do on the Facebook is they use it to share with their friends and the people around them and their community, and they use it to keep in touch with people.

Don't discount yourself, no matter what you're doing. Everyone has a unique perspective that they can bring to the world.

I think that people just have this core desire to express who they are. And I think that's always existed.

Advertising works most effectively when it's in line with what people are already trying to do. And people are trying to communicate in a certain way on Facebook - they share information with their friends, they learn about what their friends are doing - so there's really a whole new opportunity for a new type of advertising model within that.

I think that the tax situation needs to be worked out between the countries themselves.