I'm going to go do this crazy thing. I'm going to start this company selling books online.

I try to spend my time on areas that I think are important for the future, and where I think I can add value.

If you decide that you're going to do only the things you know are going to work, you're going to leave a lot of opportunity on the table.

Obsess about customers, not competitors.

You don't want to negotiate the price of simple things you buy every day.

If you make customers unhappy in the physical world, they might each tell 6 friends. If you make customers unhappy on the Internet, they can each tell 6,000 friends.

Focusing on the customer makes a company more resilient.