Investors should be skeptical of history-based models. Constructed by a nerdy-sounding priesthood using esoteric terms such as beta, gamma, sigma and the like, these models tend to look impressive. Too often, though, investors forget to examine the assumptions behind the models. Beware of geeks bearing formulas.

Does the business have favourable long term prospects?

It is obvious that the performance of a stock last year or last month is no reason, per se, to either own it or to not own it now. It is obvious that an inability to "get even" in a security that has declined is of no importance. It is obvious that the inner warm glow that results from having held a winner last year is of no importance in making a decision as to whether it belongs in an optimum portfolio this year.

I think once you start putting phony figures into financial statements, you get in a lot of trouble. And we've seen so much of that in the last 20 years.

I bought my first stock in 1942, in the summer of '42. I was 11 years old. And so 75 years have gone by. And I have never known what the market's going to do the next day. And that's not my game. My game is to decide whether I'm in the right economy, which America's definitely been ever since that time. The Dow has gone from 100 to 21,000 during that time. And no matter what the headlines say, or terrible things are happening - we were losing the war in the Pacific when I first bought stocks.

I never buy anything unless I can fill out on a piece of paper my reasons. I may be wrong, but I would know the answer to that ...I'm paying $32 billion today for the Coca Cola Company because... If you can't answer that question, you shouldn't buy it. If you can answer that question, and you do it a few times, you'll make a lot of money.

OUR leaders have asked for “shared sacrifice.” But when they did the asking, they spared me. I checked with my mega-rich friends to learn what pain they were expecting. They, too, were left untouched.