I have a name for people who went to the extreme efficient market theory-which is "bonkers". It was an intellectually consistent theory that enabled them to do pretty mathematics. So I understand its seductiveness to people with large mathematical gifts. It just had a difficulty in that the fundamental assumption did not tie properly to reality.

Knowing what you don't know is more useful than being brilliant.

In my whole life, I have known no wise people (over a broad subject matter area) who didn't read all the time - none, zero. You'd be amazed at how much Warren reads - at how much I read. My children laugh at me. They think I'm a book with a couple of legs sticking out.

We all are learning, modifying, or destroying ideas all the time. Rapid destruction of your ideas when the time is right is one of the most valuable qualities you can acquire. You must force yourself to consider arguments on the other side.

I think the notion...that liquidity is this - of tradable common stock - is a great contributor to capitalism - I think that is mostly twaddle... The liquidity gives us these crazy booms, which have many problems as well as virtues.

Someone will always be getting richer faster than you. This is not a tragedy.

There are exceptional loyalties and there are old fashion ideas about how you get loyalties, and after all the auditorium is full of people who have co-owned shares with the managers for many decades, and in many cases they co-invested when everyone was young and obscure. Also when you come back to a place like that you are celebrating old loyalties, and of course the basic idea behind so much of Berkshire is the old fashioned idea that the best way to get loyalty is to deserve loyalty.