In childhood our credulity serves us well. It helps us to pack, with extraordinary rapidity, our skulls full of the wisdom of our parents and our ancestors. But if we don't grow out of it in the fullness of time, our ... nature makes us a sitting target for astrologers, mediums, gurus, evangelists, and quacks. We need to replace the automatic credulity of childhood with the constructive skepticism of adult science.

I'm fond of science fiction. But not all science fiction.

We cannot, of course, disprove God, just as we can't disprove Thor, fairies, leprechauns, and the Flying Spaghetti Monster. But, like those other fantasies that we can't disprove, we can say that God is very, very improbable.

The mob hysteria over pedophiles has reached epidemic proportions and driven parents to panic. Today's Just Williams, today's Huck Finns, today's Swallows and Amazons are deprived of the freedom to roam that was one of the delights of childhood in earlier times (when the actual, as opposed to the perceived, risk of molestation was probably no less).

Religion teaches the dangerous nonsense that death is not the end.

Our leaders have described the recent atrocity with the customary cliche: mindless cowardice. Mindless may be a suitable word for the vandalising of a telephone box. It is not helpful for understanding what hit New York on September 11. Those people were not mindless and they were certainly not cowards. On the contrary, they had sufficiently effective minds braced with an insane courage, and it would pay us mightily to understand where that courage came from. It came from religion.

Have they discovered evolution yet?