I'm used to people with very high IQs knowing how to recognize reality, but there's a huge human tendency where it may be instructive to think that whatever you're doing to succeed is all right.

Opportunity cost is a huge filter in life. If you've got two suitors who are really eager to have you and one is way the hell better than the other, you do not have to spend much time with the other. And that's the way we filter out buying opportunities.

If you have only a little capital and are young today, there are fewer opportunities than when I was young. Back then, we had just come out of a depression. Capitalism was a bad word. There had been abuses in the 1920s. A joke going around then was the guy who said, 'I bought stock for my old age and it worked - in six months, I feel like an old man!' "It's tougher for you, but that doesn't mean you won't do well - it just may take more time. But what the heck, you may live longer."

Wrigley is a great business, but that doesn't solve the problem. Buying great businesses at advantageous prices is very tough.

The general culture of investment banking has deteriorated over the years. We did a $6 million deal years ago for Diversified Retailing and we were rigorously and intelligently screened. They bankers cared and wanted to protect their clients. The culture now is that anything that can be sold for a profit will be. 'Can you sell it?' is the moral test, and that's not an adequate test.

If it is wisdom you're after, you're going to spend a lot of time on your ass reading.

If the same family were always on the bottom, then you'd have big resentments. But if DuPonts go down and Pampered Chef up, [that's good]. That much churn makes people think the system is fairer. Buffett: We don't like churn now, but we liked it more 30-40 years ago.