We have to live with the rest of the world. And it's a mistake, in my view. Trade has generally developed in this country. We actually export 12 or 13 percent of our GDP. It was only 5 percent in 1970. But it benefits us. It benefits the rest of the world. It doesn't benefit the steelworker maybe in Ohio. And that's the problem that has to be addressed, because when you have something that's good for society, but terribly harmful for given individuals, we have got to make sure those individuals are taken care of.
In our view, though, investment students need only two well-taught courses-How to Value a Business, and How to Think about Market Prices. Your goal as an investor should simply be to purchase, at a rational price, a part interest in an easily-understandable business who's earnings are virtually certain to be materially higher five, ten and twenty years from now.
You're dealing with a lot of silly people in the marketplace; it's like a great big casino and everyone else is boozing. If you can stick with Pepsi, you should be OK.
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.
Interest rates are to asset prices what gravity is to the apple. When there are low interest rates, there is a very low gravitational pull on asset prices.
At Berkshire, I both initiate and monitor every derivatives contract on our books ... If Berkshire ever gets in trouble, it will be my fault. It will not be because of the misjudgments made by a risk committee or chief risk officer.
If
you're an investor, you're looking on what the asset is going to do, if
you're a speculator, you're commonly focusing on what the price of the
object is going to do, and that's not our game.
We have usually made our best purchases when apprehensions about some macro event were at a peak. Fear is the foe of the faddist, but the friend of the fundamentalist.
Most investors, both institutional and individual, will find that the best way to own common stocks (shares') is through an index fund that charges minimal fees. Those following this path are sure to beat the net results (after fees and expenses) of the great majority of investment professionals.
People who watch their weight, golf scores, and fuel bills seem to shun quantitative evaluation of their investment management skills although it involves the most important client in the world-themselves.