Artists rarely do the same thing over and over again. Art is about the new, doing things in a new way.

I don't think the market can keep going up. In the U.S., we see real estate not going up.. houses are selling at lower prices. You can't have anything going up 10 percent to 20 percent to 30 percent indefinitely.

I'd be bored to death if I spent all my time with other businesspeople, bankers and lawyers.

I don't think it makes any sense for an individual to invest in common stocks unless they know the company, work at the company, and so on.

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

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.

The first thing I started collecting was stamps. Until I started discovering girls. That was the end of stamps.