...all man's desired geometric progressions, if a high rate of growth is chosen, at last come to grief on a finite earth. And the social system for man on earth is fair enough, eventually, that almost all massive cheating ends in disgrace.

Most people are too fretful, they worry to much. Success means being very patient, but aggressive when it's time.

Ben Franklin and Samuel Johnson, he credits their wisdom for his success. "They were both utterly brilliant men. And powerful communicators. Both have helped me all the way through life. Their lessons are easy to assimilate."

If you're going to buy something which compounds for 30 years at 15% per annum and you pay one 35% tax at the very end, the way that works out is that after taxes, you keep 13.3% per annum. In contrast, if you bought the same investment, but had to pay taxes every year of 35% out of the 15% that you earned, then your return would be 15% minus 35% of 15%-or only 9.75% per year compounded. So the difference there is over 3.5%. And what 3.5% does to the numbers over long holding periods like 30 years is truly eye-opening.

Mutual funds charge 2% per year and then brokers switch people between funds, costing another 3-4 percentage points. The poor guy in the general public is getting a terrible product from the professionals. I think it's disgusting. It's much better to be part of a system that delivers value to the people who buy the product. But if it makes money, we tend to do it in this country.

Obviously, consideration of costs is key, including opportunity costs. Of course capital isn't free. It's easy to figure out your cost of borrowing, but theorists went bonkers on the cost of equity capital. They say that if you're generating a 100% return on capital, then you shouldn't invest in something that generates an 80% return on capital. It's crazy.

A rough rule in life is that an organization foolish in one way in dealing with a complex system is all too likely to be foolish in another.