While the apostles of the new so-called "behavioral" theory present ample evidence of how often human beings make irrational financial decisions, it remains to be seen whether these decisions lead to predictable errors that create systematic mispricings upon which rational investors can readily and economically capitalize.

If you have trouble imagining a 20% loss in the stock market, you shouldn't be in stocks.

I think it's fairly easy to provide a moral defense of capitalism. It has been - over the last 200 years - the underlying basis for enormous increases in productivity and human welfare and rising living standards, particularly in the United States, and in the industrialized nations but in fact, in most parts of the world.

I believe - deeply and profoundly - that speculation is a loser's game.

If the data do not prove that indexing wins, well, the data are wrong.

Learn every day, but especially from the experiences of others. It's cheaper!

I believe that the behavior of too many of our corporations investment bankers and fund managers has jeopardized some of the trust that investors have had. It's not the economic engine that we need to focus on, but the need to make sure that our investors receive their fair share of the returns that that great economic system produces.