You are dead- what am I speaking to?

When you choose one way out of many, all the ways you don't take are snuffed out like candles, as if they'd never existed. At that moment all Will's choices existed at once. But to keep them all in existence meant doing nothing. He had to choose, after all.

Gradually, at various points in our childhoods, we discover different forms of conviction. There's the rock-hard certainty of personal experience ("I put my finger in the fire and it hurt,"), which is probably the earliest kind we learn. Then there's the logically convincing, which we probably come to first through maths, in the context of Pythagoras's theorem or something similar, and which, if we first encounter it at exactly the right moment, bursts on our minds like sunrise with the whole universe playing a great chord of C Major.

Tolkien, who created this marvellous vehicle, doesn't go anywhere in it. He just sits where he is. What I mean by that is that he always seems to be looking backwards, to a greater and more golden past; and what's more he doesn't allow girls or women any important part in the story at all. Life is bigger and more interesting than The Lord of the Rings thinks it is.

If a coin comes down heads, that means that the possibility of its coming down tails has collapsed. Until that moment the two possibilities were equal. But on another world, it does come down tails. And when that happens, the two worlds split apart.

Was there only one world after all which spent its time dreaming of others?

He's [Jesus] the most fascinating character in history, really - the character who's made more difference to the world than anyone since him. I daresay that Muslims would say Muhammad was that character, but I think Jesus had a sort of 600-year start on him.