No formula in finance tells you that the moat is 28 feet wide and 16 feet deep. That's what drives the academics crazy. They can compute standard deviations and betas, but they can't understand moats.

I would say that life at 84, I am having as much fun as I've ever had in my life. I mean I get to do what I love every day with the people I love-and it just doesn't get any better than that.

Always associate yourself with people who are better than you.

With housing it's something even more dramatic than that, because most people aspire to own their own home.If you really think that houses prices are going to go up next year and the year after, you feel if I don't buy it this year, I'm going to have to buy it next year.That's not true of an Internet stock. But it's true of a home.

I'm happy when I can spend every day doing the things that I like to do. That's my luxury.

Exercise humility and restraint.

You should invest in a business that even a fool can run, because someday a fool will.