A lot of things that we cannot buy and sell in markets used to be totally legal objects of market exchange - human beings when we had slavery, child labour, human organs, and so on. So there is no economic theory that actually says that you shouldn't have slavery or child labour because all these are political, ethical judgments.

I know more about what it's like to be elderly and infirm and kind of stupid, the way you get forgetful, but on the other hand I'm a littler, wiser, dare we say? The word 'wisdom' has kind of faded out of our vocabulary, but yeah, I'm a little wiser.

The future is too interesting and dangerous to be entrusted to any predictable, reliable agency. We need all the fallibility we can get. Most of all, we need to preserve the absolute unpredictability and total improbability of our connected minds. That way we can keep open all the options, as we have in the past.

As we know from the study of history, no new system can impose itself upon a previous one without incorporating many of the elements to be found in the latter...