Valuing a business is part art and part science.

Well, one time some attractive woman sat next to Charlie and asked him what he owed his success to, and, unfortunately, she insisted on a one word answer. He had a speech prepared that would have gone on for several hours. But when forced to boil it down to one word, he said that was "rational". You know, he comes equipped for rationality, and he applies it in business. He doesn't always apply it elsewhere, but he applies it in business and that has made him a huge business success.

We are trading away a little bit of our country all the time for this access consumption that we have over what we've produced. That is not good. I think it's terrible over time. But our country's productive grows enough so we actually can do that, and we'll still be better off. We just don't be as well off as if we hadn't done it.

Rule No.1: Never lose money. Rule No.2: Never forget rule No.1.

The key to investing is not assessing how much an industry is going to affect society, or how much it will grow, but rather determining the competitive advantage of any given company and, above all, the durability of that advantage.

With each investment you make, you should have the courage and the conviction to place at least ten per cent of your net worth in that stock

The fundamental basis of above-average performance in the long run is sustainable competitive advantage.