In high school, I would drive my teachers batty. They would make a statement, and I would say, 'Why is that?' They didn't want to be questioned.

A real collector does not sell.

While I am proud of a number of accomplishments, there are real costs to being unreasonable. Long hours. Too little time with family. A near incapacity for, as they say, stopping and smelling the roses.

Research – and using what you learn from it to analyze every situation – is what separates being unreasonable from being irrational.

I can imagine no more important contribution to our country's future than a long-term commitment to improving urban K-12 public schools.

No one ever made a million bucks by being cautious or timid or reasonable.

I've never been one who enjoys maintaining the status quo. I'm always pushing for new ideas, whether it's in business or philanthropy.