It's natural that you'd have more brains going into money management. There are so many huge incomes in money management and investment banking - it's like ants to sugar. There are huge incentives for a man to take up money management as opposed to, say, physics, and it's a lot easier.

Berkshireis not as good as it was in terms of percentage compounding [going forward], but it's still a hell of a business.

A different set of incentives from rising in an economic establishment where the rewards system, again, the reinforcement, comes from being a truffle hound. That's what Jacob Viner, the great economist called it: the truffle hound - an animal so bred and trained for one narrow purpose that he wasn't much good at anything else, and that is the reward system in a lot of academic departments.

We have a higher percentage of the intelligentsia engaged in buying and selling pieces of paper and promoting trading activity than in any past era. A lot of what I see now reminds me of Sodomand Gomorrah. You get activity feeding on itself, envy and imitation. It has happened in the past that there came bad consequences.

Avoid working directly under somebody you don't admire and don't want to be like.

I don't have too much interest in teaching other people how to get rich. And that isn't because I fear the competition or anything like that - Warrenhas always been very open about what he's learned, and I share that ethos. My personal behavior model is Lord Keynes: I wanted to get rich so I could be independent, and so I could do other things like give talks on the intersection of psychology and economics. I didn't want to turn it into a total obsession.

You must have the confidence to override people with more credentials than you whose cognition is impaired by incentive-caused bias or some similar psychological force that is obviously present. But there are also cases where you have to recognize that you have no wisdom to add - and that your best course is to trust some expert.