The big change, the really radical change in communication, was in the late 19th century. The shift from sailing ships to telegraph is astronomical. Everything since then has been small increments, including the internet. So you don't have to wait for a letter to get to England in six weeks, you have almost instant communication. That was an enormous shift.

I have no Facebook page or Twitter - I don't participate in it, and I don't like it particularly. I mean, it's a form of interaction, which strikes me as extremely superficial.

Nicaragua dealt with the problem of terrorism in exactly the right way. It followed international law and treaty obligations. It collected evidence, brought the evidence to the highest existing tribunal, the International Court of Justice, and received a verdict - which, of course, the U.S. dismissed with contempt.

There is either a crisis or a return to the norm of stagnation. One view is the norm is stagnation and occasionally you get out of it. The other is that the norm is growth and occasionally you can get into stagnation. You can debate that but it's a period of close to global stagnation.

I've already supported Bernie Sanders in the primaries.

The evangelicals. . . . If all they want is gold Cadillacs and sex and so on, no big problem.

I suppose frogs pay no attention to being frogs. They take it for granted. What interests a frog are differences among frogs. From our point of view they are more or less the same, from their point of view they are all radically different.