The American economy is going to do fine. But it won't do fine every year and every week and every month. I mean, if you don't believe that, forget about buying stocks anyway... It's a positive-sum game, long term. And the only way an investor can get killed is by high fees or by trying to outsmart the market.

I think people - what people want to do is make [economy] get worse.

If you can't communicate and talk to other people and get across your ideas, you're giving up your potential.

The approach and strategies are very similar in that you gather all the information you can and then keep adding to that base of information as things develop. You do whatever the probabilities indicated based on the knowledge that you have at that time, but you are always willing to modify your behaviour or your approach as you get new information. In bridge, you behave in a way that gets the best from your partner. And in business, you behave in the way that gets the best from your managers and your employees.

I wouldn't want to manufacture cigarettes. But if I owned - we do own Costco. Do they sell them? Yes. So I don't have a problem owning stock in that. But I just wouldn't want to - I wouldn't want to do it myself. I basically think, if anything is sufficiently antisocial, society should do something about it. But that's a separate question. But - and I don't think there's any company that I have seen that's 100 percent pure.

Should you find yourself in a chronically leaking boat, energy devoted to changing vessels is likely to be more productive than energy devoted to patching leaks.

Generally, we have translated greater output in the few hours of work per week over the last century. And that's a good trend of the future. But we do have to have a system that, as output of goods and services keeps increasing per capita, that it takes care of the people who are willing to work and really are not getting by very well with a family on a 40-hour week.