It never ceases to amaze me to see how much territory can be grasped if one merely masters and consistently uses all the obvious and easily learned principles.

The theory of modern education is that you need a general education before you specialize. And I think to some extent, before you're going to be a great stock picker, you need some general education.

The average result has to be the average result. By definition, everybody can't beat the market. As I always say, the iron rule of life is that only 20% of the people can be in the top fifth. That's just the way it is.

And your brain doesn't naturally know how to think the way Zeckhauser knows how to play bridge. "for example," people do not react symmetrically to loss and gain. Well maybe a great bridge player like Zeckhauser does, but that's a trained response. Ordinary people, subconsciously affected by their inborn tendencies.

I see almost no change in the price of the composite product that flows through Costco I don't feel sorry for the people who pay $27 million for an 8,000-square-foot condo in Manhattan. So inflation comes in places.

Mimicking the herd invites regression to the mean.

Chris Davis [of the Davisfunds] has a temple of shame. He celebrates the things they did that lost them a lot of money. What is also needed is a temple of shame squared for things you didn't do that would have made you rich. Forgetting your mistakes is a terrible error if you are trying to improve your cognition. Reality doesn't remind you. Why not celebrate stupidities in both categories?