I think you'll make more money in the end with good ethics than bad. Even though there are some people who do very well, like Marc Rich-who plainly has never had any decent ethics, or seldom anyway. But in the end, Warren Buffett has done better than Marc Rich-in money-not just in reputation.

People always underestimate the ability of earth to increase its carrying capacity.

When you borrow a man's car, always return it with a tank of gas.

We have a history when things are really horrible of wading in when no one else will.

You've got to have models in your head and you've got to array you experience - both vicarious and direct - onto this latticework of mental models.

A few public hangings will really change behavior. One of our Presidents said if he could execute three people each year for no cause, it would make it a lot easier to govern. When someone said that's not enough, he said, "Oh yes it is, because I'd publish the list of people under consideration."

Fancy computers are engaging in legalized front-running. The profits are clearly coming from the rest of us - our college endowments and our pensions. Why is this legal? What the hell is the government thinking? It's like letting rats into a restaurant.