Once you've ruled out the impossible then whatever is left, however improbable, must be the truth. The problem lay in working out what was impossible, of course. That was the trick, all right. There was also the curious incident of the orangutan in the night-time.

I intend, before the endgame looms, to die sitting in a chair in my own garden with a glass of brandy in my hand and Thomas Tallis on the iPod. Oh, and since this is England, I had better add, "If wet, in the library." Who could say that this is bad?

But…but you can’t treat religion as a sort of buffet, can you? I mean, you can’t say yes please, I’ll have some of the Celestial Paradise and a helping of the Divine Plan but go easy on the kneeling and none of the Prohibition of Images, they give me wind. Its table d´hôte or nothing, otherwise…well, it would be silly.

And the new day was a great big fish.

So much universe, and so little time.

First draft: let it run. Turn all the knobs up to 11. Second draft: hell. Cut it down and cut it into shape. Third draft: comb its nose and blow its hair. I usually find that most of the book will have handed itself to me on that first draft.

Several sellers of hot meat pies and sausages in a bun had appeared from nowhere and were doing a brisk trade. [Footnote: They always do, everywhere. No-one sees them arrive. The logical explaination is that the franchise includes the stall, the paper hat and a small gas-powered time machine.]