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.

In fact, there is a very close correlation between human rights violations and US aid, particularly in Latin America.

There isn't much doubt that like other animal societies, those of Homo sapiens involved plenty of cooperation, which might have been considerably enhanced, one would suppose, by the emergence of the remarkable instrument of language.

The smart way to keep people passive and obedient is to strictly limit the spectrum of acceptable opinion, but allow very lively debate within that spectrum - even encourage the more critical and dissident views. That gives people the sense that there's free thinking going on, while all the time the presuppositions of the system are being reinforced by the limits put on the range of the debate.

There's a very striking fact about the elections which you can't miss if you looked at the red-and-blue electoral map the next day: it's the same political landscape that you saw during the Civil War - nothing much has changed except the party names.

Plainly, such an approach does not exclude other ways of trying to comprehend the world. Someone committed to it (as I am) can consistently believe (as I do) that we learn much more of human interest about how people think and feel and act by reading novels or studying history than from all of naturalistic psychology, and perhaps always will; similarly, the arts may offer appreciation of the heavens to which astrophysics cannot aspire.

Cuba forces in Angola gave a real shot in the arm to the liberation movements, and it also was a lesson to the white South Africans that the end is coming. They can't just hope to subdue the continent on racist grounds.