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.

It would be one of the most irritating experiences in the world to do a lot of work to uncover a fraud and then at have it go from X to 3X and at h the crooks happily partying with your money while you're meeting margin calls. Why would you want to go within hailing distance of that?

I think the idea that the hedge fund manager gets lower taxes than the taxi driver or the physics professor is insane. The legislators who leave that policy in place are derelict in their duties to be rational and fair. There are plenty of them in both political parties. It's totally outrageous.

Part of [having uncommon sense] is being able to tune out folly, as opposed to recognizing wisdom. If you bat away many things, you don't clutter yourself.

Warren spends 70 hours a week thinking about investing .

Avoid evil, particularly if they're attractive members of the opposite sex.

Wells Fargo behaves better than the average big bank. But nobody's perfect.