We try to buy businesses with good-to-superb underlying economics run by honest and able people and buy them at sensible prices. That's all I'm trying to do.
To invest successfully, you need not understand beta, efficient markets, modern portfolio theory, option pricing or emerging markets. You may, in fact, be better off knowing nothing of these. That, of course, is not the prevailing view at most business schools, whose finance curriculum tends to be dominated by such subjects. In our view, though, investment students need only two well-taught courses - How to Value a Business, and How to Think About Market Prices.
I spend twelve hours a week - a little over 10% of my waking hours - playing the game. Now I am trying to figure out how to get by on less sleep in order to fit in a few more hands.
If I knew where I was going to want to live the next five or 10 years I would buy a home and I'd finance it with a 30-year mortgage... It's a terrific deal.
I've made money over the years by buying into good companies, run by good people, at attractive prices. And I don't try and make it out of buying into the market at one point and selling at another point.
Having a large amount of leverage is like driving a car with a dagger on the steering wheel pointed at your heart. If you do that, you will be a better driver. There will be fewer accidents but when they happen, they will be fatal.
If you understood a business perfectly and the future of the business, you would need very little in the way of a margin of safety. So, the more vulnerable the business is, assuming you still want to invest in it, the larger margin of safety you'd need. If you're driving a truck across a bridge that says it holds 10,000 pounds and you've got a 9,800 pound vehicle, if the bridge is 6 inches above the crevice it covers, you may feel okay, but if it's over the Grand Canyon, you may feel you want a little larger margin of safety.