Berkshire's past record has been almost ridiculous. If Berkshirehad used even half the leverage of, say, Rupert Murdoch, it would be five times its current size.

Those who will not face improvements because they are changes, will face changes that are not improvements.

I mean people are really crazy about minor decrements down. And then, if you act on them, then you get into reciprocation tendency, because you don't just reciprocate affection, you reciprocate animosity, and the whole thing can escalate. And so huge insanities can come from just subconsciously over-weighing the importance of what you're losing or almost getting and not getting.

Obviously if you want to get good at something which is competitive, you have to think about it and practice a lot. You have to keep learning because world keeps changing and competitors keep learning. You have to go to bed wiser than you got up. As you try to master what you are trying to do – people who do that almost never fail utterly. Very few have ever failed with that approach. You may rise slowly, but you are sure to rise.

We have a passion for keeping things simple.

Some people seem to think there's no trouble just because it hasn't happened yet. If you jump out the window at the 42nd floor and you're still doing fine as you pass the 27th floor, that doesn't mean you don't have a serious problem. I would want to address the problem right now.

What do you want to avoid? Such an easy answer: sloth and unreliability. If you're unreliable it doesn't matter what your virtues are. You're going to crater immediately. Doing what you have faithfully engaged to do should be an automatic part of your conduct. You want to avoid sloth and unreliability.