At its core, I don't view Facebook as a social network. I think it could become the driver's license of the Internet. And beyond that, it can become the pipes and the plumbing upon what most of the Internet is built. I think it's very well positioned.

To make a bestseller, there are more customers than just your customers: Selling to the end-user is just one piece of the puzzle. In my case, I needed to first sell myself to the publisher to get marketing support and national retail distribution.

In all cases where doubt crops up, ask yourself, "If I had a gun to my head and had to do it, how would I do it?" It's not as hard as you think.

An entrepreneur isn't someone who owns a business, it's someone who makes things happen.

Every time I find myself stressed out, it's because I do things primarily driven by growth.

Ninety-nine percent of people believe they can't do great things, so they aim for mediocrity.

The goal is not to simply eliminate the bad, which does nothing more than leave you with a vacuum, but to pursue and experience the best in the world.