"Entrepreneurs tend to have a singular weakness that allows them to do things without checking their conscience."

"Juvenile delinquents act and then try to sort things out afterward. I think entrepreneurs have this tendency."

Entrepreneurs don't care what you think. They're going to do what they want.

"I'm not stopping. It would be an act of shallow cowardice." Sounds juvenile delinquent-y, doesn't it? It's actually what the Segway entrepreneur keeps telling himself.

ADDED: Gordon Smith thinks entrepreneurs are too varied to be stereotyped — which is, I think, a slam on the whole idea of applying psychology generically.