I would argue that a majority of the horrors we face would not have happened if the accounting profession developed and enforced better accounting.

As I talk about strengths and weaknesses in academic economics, one interesting fact you are entitled to know is that I never took a course in economics. And with this striking lack of credentials, you may wonder why I have the chutzpah to be up here giving this talk. The answer is I have a black belt in chutzpah. I was born with it.

We regard using [a stock's] volatility as a measure of risk is nuts. Risk to us is 1) the risk of permanent loss of capital, or 2) the risk of inadequate return. Some great businesses have very volatile returns - for example, See's [a candy company owned by Berkshire] usually loses money in two quarters of each year - and some terrible businesses can have steady results.

I think the main figure that matters to all of us, including people in the media, is: How does GDP per capita grow? And those figures have been very good. There is a huge flux both up and down, so it isn't like we're all static in status. What's important is that pie grows.

It would be nice if this [finding really cheap stocks] happened all the time. Unfortunately, it doesn't.

Some years ago one oil company bought a fertilizer company, and every other major oil company practically ran out and bought a fertilizer company. And there was no more damned reason for all these oil companies to buy fertilizer companies, but they didn't know exactly what to do, and if Exxon was doing it, it was good enough for Mobil and vice versa.

The game is to keep learning, and I don't think people are going to keep learning who don't like the learning process.