Sometimes we get sad about things and we don't like to tell other people that we are sad about them. We like to keep it a secret. Or sometimes, we are sad but we really don't know why we are sad, so we say we aren't sad but we really are.

There's something rather wonderful about the fact that Oxford is a very small city that contains most of the cultural and metropolitan facilities you could want, in terms of bookshops, theatre, cinema, conversation. But it's near enough to London to get here in an hour, and it's near enough to huge open spaces without which I would go insane.

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 I go out of Father's house and I walk down the street, and it is very quiet even thought it is the middle of the day and I can't hear any noise except birds singing and wind and sometimes buildings falling down in the distance, and if I stand very close to traffic lights I can hear a little click as the colors change.

I like poetry when I don't quite understand why I like it. Poetry isn't just a question of wrapping something up and giving it to someone else to unwrap. It just doesn't work like that.

People think that alien spaceships would be solid and made of metal and have lights all over them and move slowly through the sky because that is how we would build a spaceship if we were able to build one that big. But aliens, if they exist, would probably be very different from us. They might look like big slugs, or be flat like reflections. Or they might be bigger than planets. Or they might not have bodies at all. They might just be information, like in a computer. And their spaceships might look like clouds, or be made up of unconnected objects like dust or leaves.

When I was 13 or 14, I started devouring novels; literature took quite a while to take me over, but it caught up just in time to save me from becoming a mathematician.