Big breakthrough ideas often seem nuts the first time you see them.

When I talk to entrepreneurs today, I feel like the grandfather who was in the Civil War.

At a certain point in your career - I mean, part of the answer is a personal answer, which is that at a certain point in your career, it becomes more satisfying to help entrepreneurs than to be one.

The difference between a vision and a hallucination is that other people can see the vision.

There was a point in the late '90s where all the graduating M.B.A.'s wanted to start companies in Silicon Valley, and for the most part they were not actually qualified to do it.

Rule 1: All rules can be broken. Many (ex-legal and ethical) should be. Most people won't.

People who tell computers what to do, and people who are told by computers what to do.