I think a good entrepreneur has a very clear grasp of what the goal is, an unwavering sense of the goal, an utterly agile approach of getting there.

I'd never taken an SAT prep course. They were for weaker students.

No two children learn in the same way. While we might agree that every American eight-year-old should be able to read and multiply, beyond those basics, there are few reasons to make every student follow the same path.

I played street hockey in Riverside Park when I was a kid. I played goalie. I didn't make the hockey team in college, so I played lacrosse instead. I didn't play hockey again for 20 to 25 years, and then my son became interested in the game. I decided to pick it up again. A friend let me play backup on his team.

The Internet will save higher education, but it may kill your alma mater.

The Internet rewards scale; by trading higher up-front costs for lower marginal cost, market leaders can invest in better technology and service. As a result, there is nothing online that is both great in quality and small in scale. Amazon wasn't originally a better bookstore than the small shops we mourn, but it is now.

When I was a student at Princeton University, I was working part time in a grocery store. I saw an ad for teachers of a prep course. I don't remember what it paid, but it was easily double or triple the minimum wage.