Beta and modern portfolio theory and the like - none of it makes any sense to me.

I have what I call an iron prescription that helps me keep sane when I naturally drift toward preferring one ideology over another and that is: I say that I'm not entitled to have an opinion on this subject unless I can state the arguments against my position better than the people who support it. I think only when I've reached that state am I qualified to speak. This business of not drifting into extreme ideology is a very, very important thing in life

Every business tries to turn this year's success into next year's greater success. It's hard for me to see why Microsoft is sinful to do this. If it's a sin, then I hope all of Berkshire Hathaway's subsidiaries are sinners. Someone whose salary is paid by U.S.taxpayers is happy to dramatically weaken the one place where we're winning big?!

It takes almost no capital to open a new See's candy store. We're drowning in capital of our own that has almost no cost. It would be crazy to franchise stores like some capital-starved pancake house. We like owning our own stores as a matter of quality control.

In the 1930s, there was a stretch where you could borrow more against the real estate than you could sell it for. I think that's what's going on in today's private-equity world.

I have a black belt in chutzpah. I was born with it. Some people, like some of the women I know, have a black belt in spending. They were born with that. But what they gave me was a black belt in chutzpah.

Strategic plans cause more dumb decisions than anything else in America.