There's an element of paradox there - that at least you know where you stand with the fundamentalists. I mean, they're absolutely clear in their error and their stupidity, and so you can really go after them.

An Internet meme is a hijacking of the original idea. Instead of mutating by random change and spreading by a form of Darwinian selection, Internet memes are altered deliberately by human creativity. There is no attempt at accuracy of copying, as with genes - and as with memes in their original version.

I don't shout people down. I argue people down, perhaps.

How any government could promote the Vardy academies in the North-East of England is absolutely beyond me. Tony Blair defends them on grounds of diversity, but it should be unthinkable in the 21st century to have a school whose head of science believes the world is less than 10,000 years old.

Any belief in miracles is flat contradictory not just to the facts of science but to the spirit of science.

And the beauty of the anthropic principle is that it tells us, against all intuition, that a chemical model need only predict that life will arise on one planet in a billion billion to give us a good and entirely satisfying explanation for the presence of life here.

Religion is unusual among divisive labels in being spectacularly unnecessary. If religious beliefs had any evidence going for them, we might have to respect them in spite of their concomitant unpleasantness. But there is no such evidence. To label people as death-deserving enemies because of disagreements about real world politics is bad enough. To do the same for disagreements about a delusional world inhabited by archangels, demons and imaginary friends is ludicrously tragic.