As a teenager, I was always this strange mixture of kind of vice-captain of the rugby team and sensitive artist type the rest of the time. I was sent away to this public school in the middle of nowhere, and I think we managed to completely miss out on normal youth culture.

And because there is something they can’t see people think it has to be special, because people always think there is something special about what they can’t see, like the dark side of the moon, or the other side of a black hole, or in the dark when they wake up at night and they’re scared.

But I said that you could still want something that is very unlikely to happen.

Most adults, unlike most children, understand the difference between a book that will hold them spellbound for a rainy Sunday afternoon and a book that will put them in touch with a part of themselves they didn't even know existed.

And when the universe has finished exploding all the stars will slow down, like a ball that has been thrown into the air, and they will come to a halt and they will all begin to fall towards the centre of the universe again. And then there will be nothing to stop us seeing all the stars in the world because they will all be moving towards us, gradually faster and faster, and we will know that the world is going to end soon because when we look up into the sky at night there will be no darkness, just the blazing light of billions and billions of stars, all falling.

The secret of contentment lay in ignoring many things completely.

A lot of roles for people with disabilities are quite patronising. It's a real pity when they are just used to give dull PC kudos to a drama, or when they're wheeled on in a tokenistic way without any real involvement in the plot.