One metric catches people. We prefer businesses that drown in cash. An example of a different business is construction equipment. You work hard all year and there is your profit sitting in the yard. We avoid businesses like that. We prefer those that can write us a check at the end of the year.

Spend each day trying to be a little wiser than you were when you woke up. Day by day, and at the end of the day-if you live long enough-like most people, you will get out of life what you deserve.

If you want to understand science, you have to understand math. In business, if you're enumerate, you're going to be a klutz. The good thing about business is that you don't have to know any higher math.

Although I am very interested in the subject of human misjudgment - and lord knows I've created a good bit of it - I don't think I've created my full statistical share, and I think that one of the reasons was I tried to do something about this terrible ignorance I left the Harvard Law School with.

In the corporate world, if you have analysts, due diligence, and no horse sense, you've just described hell.

Obviously, consideration of costs is key, including opportunity costs. Of course capital isn't free. It's easy to figure out your cost of borrowing, but theorists went bonkers on the cost of equity capital. They say that if you're generating a 100% return on capital, then you shouldn't invest in something that generates an 80% return on capital. It's crazy.

The lawyers have escaped most criticism [and undeservedly so]. The tax shelters [were approved by lawyers, who got paid huge commissions to do so] and every miscreant had a high-falutin' lawyer at his side. Why don't more law firms vote with their feet and not take clients who have signs on them that say, "I'm a skunk and will be hard to handle?" I've noticed that firms that avoid trouble over long periods of time have an institutional process that tunes bad clients out. Boy, if I were running a law firm, I'd want a system like that because a lot of firms have a lot of bad clients.