Forgetting your mistakes is a terrible error if you are trying to improve your cognition.

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.

If you can get good at destroying your own wrong ideas, that is a great gift.

The idea of excessive diversification is madness.

There is the sheer amount of Franklin's wisdom. And the talent. Franklin played four instruments. He was the nation's leading scientist and inventor, plus a leading author, statesman, and philanthropist. There has never been anyone like him.

If you don't keep learning, other people will pass you by. Temperament alone won't do it - you need a lot of curiosity for a long, long time.

An investment decision in the common stock of a company frequently involves a whole lot of factors interacting ... the one thing that causes the most trouble is when you combine a bunch of these together, you get this lollapalooza effect.