I think the foundation at Berkshire [Buffett's stake in Berkshirewill pass to the Buffett Foundation upon his death] will be a plus because there will be a continuation of the culture. We'd still take in fine businesses run by people who love them.

Berkshire's past record has been almost ridiculous. If Berkshirehad used even half the leverage of, say, Rupert Murdoch, it would be five times its current size.

Our biggest mistakes, were things we didn't do, companies we didn't buy.

With so much money riding on reported numbers, human nature is to manipulate them. And with so many doing it, you get Serpico effects, where everyone rationalizes that it's okay because everyone else is doing it. It is always thus.

Chris Davis [of the Davisfunds] has a temple of shame. He celebrates the things they did that lost them a lot of money. What is also needed is a temple of shame squared for things you didn't do that would have made you rich. Forgetting your mistakes is a terrible error if you are trying to improve your cognition. Reality doesn't remind you. Why not celebrate stupidities in both categories?

Over the long term, the eclipse rate of great civilizations being overtaken is 100%. So you know how it's going to end. (Laughter) I'm more optimistic about the staying power of what's good in this country. But just because you have a wonderful spouse doesn't mean you should treat her badly. You have the feeling that some of the old virtues [that made this country great] are lessening. But there's so much good and so much strength left that I would not expect this country to suddenly founder.

It's dishonourable to stay stupider than you need to be