I have invested in four social networks. More than any other. But that's in Russia and Poland.

I'm just focused on exploring new opportunities.

The problem is that modern fundamental physics is so far from you and me. The mathematics has become so much more complicated that you need at least 10 years to understand it. Fundamental physics has advanced so far from the understanding of most people that there is really a big disconnect.

Facebook is a platform inside a platform.

The largest newspaper in the United States is only reaching 1 percent of population. We are kind of assuming that 'Wall Street Journal,' 'USA Today,' and other newspapers are very important. Yes, they're extremely important, but only to 1 percent of the population on a daily basis.

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.

You can transmit a thousand times more information.