So, at one extreme you have indigenous, tribal societies trying to stem the race to disaster. At the other extreme, the richest, most powerful societies in world history, like the United States and Canada, are racing full-speed ahead to destroy the environment as quickly as possible.

I think that the real tragedy of Greece - aside of the savagery of European bureaucracy, Brussels bureaucracy and northern banks, which was really savage - is that the Greek crisis didn't have to erupt. It could have been taken care of pretty easily at the very beginning. But it happened and Syriza came into office with a declared commitment to combat it, and in fact as I recall they actually called a referendum, which horrified Europe.

The person who wins the Nobel Prize is not the person who read the most journal articles and took the most notes on them. It's the person who knew what to look for. And cultivating that capacity to seek what's significant, always willing to question whether you're on the right track - that's what education is going to be about, whether it's using computers and the Internet, or pencil and paper, or books.

I happened to go to a school when I was a kid and that's all we did, pursue our own interests. It was kind of structured so you ended up knowing everything you were supposed to know, arithmetic, Latin, whatever it was. But almost always it was under your own initiative.

You can imagine a different world in which a number of species developed with different genetically determined linguistic systems. It hasn't happened in evolution. What has happened is that one species has developed, and the genetic structure of this species happens to involve a variety of intricate abstract principles of linguistic organization that, therefore, necessarily constrain every language, and, in fact, create the basis for learning language as a way of organizing experience rather than constituting something learned from experience.

The US health-care system is a complete scandal. It's got twice the costs of comparable countries and some of the worst outcomes.

You can’t have meaningful political democracy without functioning economic democracy.