I’d say that Berkshire Hathaway’s system is adapting to the nature of the investment problem as it really is. We’ve really made the money out of high quality businesses. In some cases, we bought the whole business. And in some cases, we just bought a big block of stock. But when you analyze what happened, the big money’s been made in the high quality businesses. And most of the other people who’ve made a lot of money have done so in high quality businesses.

A lot of share-buying, not bargain-seeking, is designed to prop stock prices up. Thirty to 40 years ago, it was very profitable to look at companies that were aggressively buying their own shares. They were motivated simply to buy below what it was worth.

Bull markets go to people's heads. If you're a duck on a pond, and it's rising due to a downpour, you start going up in the world. But you think it's you, not the pond.

You must value the business in order to value the stock.

Invert, always invert.

Intelligent people make decisions based on opportunity costs.

I'd rather throw a viper down my shirt front than hire a compensation consultant.