Facebook now is mostly about people you know. In the future it could be about people you know less but are more important.

Social is a better way to interact with digital world. It is better than search. Implications for... everything. Total change.

Facebook can be an accumulation of different intelligences.

Facebook now is mostly about people you know. In the future it could be about people you know less but are more important.

Facebook is at the forefront. It's the company that can fundamentally change the way information is being exchanged and processed. It can be the basis for artificial intelligence to develop over time.

Science is one of a handful of things that defines us as a very special species. It is amazing how far we have been able to get and how accurate our predictions are. I think understanding how the universe was born is very important. It really gives us a perspective on many things.

Big Internet companies on average are capable of generating revenue of $1 million per employee, and that compares to 10 to 20 percent of that which is normally generated by traditional offline businesses of comparable size.