To understand how people organize social systems, we have to discover the principles that we create to make some societies intelligible.

The most striking aspect of linguistic competence is what we may call the 'creativity of language,' that is, the speaker's ability to produce new sentences, sentences that are immediately UNDERSTOOD by other speakers although they bear no physical resemblance to sentences which are 'familiar.

Let's imagine again an observer looking at us without any preconceptions. I think he would be struck by the fact that although human beings have the capacity to develop scientific knowledge, it must be a very limited capacity because it is only done in very narrow and specific domains.

What was the invasion of South Vietnam, for example, in 1962, when Kennedy sent the Air Force to bomb South Vietnam and start chemical warfare? That's aggression.

Donald Trump and Sean Spicer do one thing after another to keep the media attention focused on them. And it works. These legislative achievements are being made which are chipping away at anything the government has that's of any use to anybody. Paul Ryan, I think, is the most dangerous guy in the government. He knows what he's doing. And it's very systematic. I presume he's behind the cabinet appointments, but it's pretty amazing that every single cabinet appointment is somebody devoted to destroying that part of government.

If you want to talk about distributing substances that are lethal, . . . let's be serious. Tobacco is far ahead of anything else. Alcohol is second.

There is good reason to believe that we have already entered the Sixth Extinction, a period of destruction of species on a massive scale, comparable to the Fifth Extinction 65 million years ago, when three-quarters of the species on earth were destroyed, apparently by a huge asteroid.