The idea that you try to time purchases based on what you think business is going to do in the next year or two, I think that's the greatest mistake that investors make because it's always uncertain. People say it's a time of uncertainty. It was uncertain on September 10th, 2001, people just didn't know it. It's uncertain every single day. So take uncertainty as part of being involved in investment at all. But uncertainty can be your friend. I mean, when people are scared, they pay less for things. We try to price. We don't try to time at all.

In our view, derivatives are financial weapons of mass destruction carrying dangers that, while latent, are potentially lethal.

If anything, taxes for the lower and middle class and maybe even the upper-middle class should even probably be cut further. But I think that people at the high end - people like myself - should be paying a lot more in taxes. We have it better than we've ever had it.

In the 20th century, the United States endured two world wars and other traumatic and expensive military conflicts; the Depression; a dozen or so recessions and financial panics; oil shocks; a flu epidemic; and the resignation of a disgraced president. Yet the Dow rose from 66 to 11,497.

Charlie and I have a number of filters that things have to get through before we'll think about them.

Always associate yourself with people who are better than you.

I always invest in companies an idiot could run, because one day one will.