The one thing you have to do if you write a book is put yourself in someone else's shoes. The reader's shoes. You've got to entertain them.

I started writing books for children because I could illustrate them myself and because, in my innocence, I thought they'd be easier.

There was a time in my life when I was going in and out of houses that were extraordinarily different - from a working-class terrace in Northampton to the homes of friends who were really very wealthy. It was quite an odd position to be in, I realise looking back, and quite a nice one.

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.

He was asking too many questions and he was asking them too quickly. They were stacking up in my head like loaves in the factory where Uncle Terry works. The factory is a bakery and he operates the slicing machines. And sometimes a slicer is not working fast enough but the bread keeps coming and there is a blockage. I sometimes think of my mind as a machine, but not always as a bread-slicing machine. It makes it easier to explain to other people what is going on inside it.

Every life is narrow. Our only escape is not to run away, but to learn to love the people we are and the world in which we find ourselves.

Most murders are committed by someone who is known to the victim. In fact, you are most likely to be murdered by a member of your own family on Christmas day.