I tell the kids that, even in a childhood marked by despair and deprivation, I knew that no matter what happened, I still had my family, or at least the remnants of a family ripped apart by divorce and then glued back together in various odd arrangements through a series of ill- advised remarriages. It was good to know I had a solid foundation.

Hardly anyone ever leaves. This is because Des Moines is the most powerful hypnotic known to man. Outside town there is a big sign that says, WELCOME TO DES MOINES. THIS IS WHAT DEATH IS LIKE. There isn't really. I just made that up. But the place does get a grip on you.

We forget just how painfully dim the world was before electricity. A candle, a good candle, provides barely a hundredth of the illumination of a single 100 watt light bulb.

Out of the thirty thousand types of edible plants thought to exist on Earth, just eleven—corn, rice, wheat, potatoes, cassava, sorghum, millet, beans, barley, rye, and oats—account for 93 percent of all that humans eat, and every one of them was first cultivated by our Neolithic ancestors.

The upshot of all this is that we live in a universe whose age we can't quite compute, surrounded by stars whose distances we don't altogether know, filled with matter we can't identify, operating in conformance with physical laws whose properties we don’t truly understand.

I see litter as part of a long continuum of anti-social behaviour.

More than 300 million people in the world speak English and the rest, it sometimes seems, try to.