It's a great historical joke that when the Spanish met the Aztecs, it was a blind date made in serve-you-right heaven. At the time, they were the two most unpleasant cultures in the entire world, and richly deserved each other. Still, the story of how stout Cortes blustered, bullied and bludgeoned his way to collapsing an entire empire with a handful of contagious hoodlums is astonishing.

The usual sniggering examples of animal behaviour were brought in to explain cheating. Funny how the behaviour of shrews and gibbons is never used to explain table manners or road safety or gardening, only sex. Anyway, it was bad Darwinism. Taking the example of a monkey and applying it to yourself misses the point that animal behaviour is made for the benefit of the species, not as an excuse for the individual. Being incapable of sustaining a stable pair and supporting children is really not in the interests of our species. Neither is it really in the best interests of the philanderer.

Television in the 1960s & 70s had just as much dross and the programmes were a lot more tediously patronising than they are now. Memory truncates occasional gems into a glittering skein of brilliance. More television, more channels means more good television and, of course, more bad. The same equation applies to publishing, film and, I expect, sumo wrestling.

I still secretly believe that afternoons are the time for the test card and you shouldn't watch television when the sun is out.

You either get the point of Africa or you don't. What draws me back year after year is that it's like seeing the world with the lid off.

Making a programme that appears to condone a positive stereotype actually enforces all the negative ones as well. It says that they all have a valid point. To assert that Americans are naive, Germans humourless and the French arrogant is one thing: they're big enough to take it. But to say that there's a conspiracy of Jewish bankers, that gypsies are thieves, Pakistanis are dirty and refugees are muggers is something quite else.

All my life I've been aware of the Second World War humming in the background. I was born 10 years after it was finished, and without ever seeing it. It formed my generation and the world we lived in. I played Hurricanes and Spitfires in the playground, and war films still form the basis of all my moral philosophy. All the men I've ever got to my feet for or called sir had been in the war.