Over the long term, the eclipse rate of great civilizations being overtaken is 100%. So you know how it's going to end. (Laughter) I'm more optimistic about the staying power of what's good in this country. But just because you have a wonderful spouse doesn't mean you should treat her badly. You have the feeling that some of the old virtues [that made this country great] are lessening. But there's so much good and so much strength left that I would not expect this country to suddenly founder.

It's not supposed to be easy. Anyone who finds it easy is stupid.

Wall Street has too much wealth and political power.

...all man's desired geometric progressions, if a high rate of growth is chosen, at last come to grief on a finite earth. And the social system for man on earth is fair enough, eventually, that almost all massive cheating ends in disgrace.

I also want to raise the possibility that there are, in the very long term, "virtue effects" in economics- for instance that widespread corrupt accounting will eventually create bad long term consequences as a sort of obverse effect from the virtue-based boost double-entry book-keeping gave to the heyday of Venice. I suggest that when the financial scene starts reminding you of Sodomand Gomorrah, you should fear practical consequences even if you like to participate in what is going on.

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.

You have to know accounting. It's the language of practical business life. It was a very useful thing to deliver to civilization. I've heard it came to civilization through Venice which of course was once the great commercial power in the Mediterranean. However, double entry bookkeeping was a hell of an invention.