Today, National Geographic has a membership side with a magazine and some television side, and they generate about a billion dollars in revenue, and they're profitable. And so at the end of the year they have some bottom line profit which they can then reinvest, because they're running it as a not-for-profit in charitable endeavors.

The idea that maybe you don't have to own a car if you only need one occasionally may catch on, just like time-sharing caught on in real estate

My father and his brothers were all lawyers, so I think that the expectation was probably for me to grow up to be an attorney, but it never really fascinated me that much. I was more interested in building things.

At AOL, we thought the killer app was people

Think about this: It was illegal for most people to connect to the internet before 1992.

If you don't have both of them working together in a complementary, cohesive way, you're not going to be successful.

When I was trying to popularize the concept of the Internet - ten or 15 years ago - I came up with this concept of "the 5 Cs." Services needed to have content, context, community, commerce, and connectivity. After that, when I was trying to think of what the key management principles were to build into the culture, I started talking about the Ps. The P's were things like passion, perseverance, perspective and people. I think the people aspect is really the most important one.