When somebody makes it very easy for you to do it by saying you don't really have to put up my money, you can lie about your income a little, or we'll give you 100 percent mortgage, you're going to do it, because everybody that's done it has been proven right. You have social tools, and you're going to feel like an idiot if you didn't do it, because the house cost more.

If we have a strength, it is in recognizing when we are operating well within our circle of competence and when we are approaching the perimeter.

Intrinsic value can be defined simply: It is the discounted value of the cash that can be taken out of a business during its remaining life.

A single year's performance is of minor importance and, good or bad, should never be taken seriously.

There are a few investment managers, of course, who are very good - though in the short run, it's difficult to determine whether a great record is due to luck or talent. Most advisors, however, are far better at generating high fees than they are at generating high returns. In truth, their core competence is salesmanship. Rather than listen to their siren songs, investors - large and small - should instead read Jack Bogle's The Little Book of Common Sense Investing.

The most common cause of low prices is pessimism - sometimes pervasive, sometimes specific to a company or industry. We want to do business in such an environment, not because we like pessimism but because we like the prices it produces.

[The U.S. Treasury] can borrow basically unlimited amounts. They can stay there for years and years. These assets will be worth more money over time. So when Merrill Lynch sells a bunch of mortgage-related assets at 22 cents on the dollar like they did a month or so ago, the buyer goes - is going to make money, and he's going to make a lot more money if it happens to be an institution like the U.S. government which has very, very cheap borrowing costs.