Is anyone really surprised that Warren, who is the ultimate embodiment of concentrated decision-making power, picked somebody [Bill and Melinda Gates] who he thinks is like him in many important ways? It was a noble and sensible decision.

Bull markets go to people's heads. If you're a duck on a pond, and it's rising due to a downpour, you start going up in the world. But you think it's you, not the pond.

As I continued through Cicero's pages, I found much more material celebrating my way of life.

Finding a single investment that will return 20% per year for 40 years tends to happen only in dreamland. In the real world, you uncover an opportunity, and then you compare other opportunities with that. And you only invest in the most attractive opportunities. That's your opportunity cost. That's what you learn in freshman economics. The game hasn't changed at all. That's why Modern Portfolio Theory is so asinine.

Our success has come from the lack of oversight we've provided, and our success will continue to be from a lack of oversight. But if you're going to provide minimal oversight, you have to buy carefully. It's a different model from GE's. GE's works - it's just very different from ours.

A board member should be perfectly willing to leave at any time and willing to make the tough calls.

The theory of modern education is that you need a general education before you specialize. And I think to some extent, before you're going to be a great stock picker, you need some general education.