With the adult ones, I feel I need to get as deep inside the psychology of a character as I can, and that needs to be first-person. In the children's books, I feel I need some distance. I don't want to be the nine-year-old at the center of the story. I need to have some type of narrative voice.

He suddenly became convinced that if he didn’t do something sensible, something to put his mind to some use, then before he knew it he would be wondering round the streets having fights with himself and inviting domestic animals to social occasions too.

Just because a man glances up at the sky at night does not make him an astronomer, you know.

In his heart, he knew that there was no reason to be impolite to someone, even if they did work for you. There was such a thing as manners after all.

I think that books for young people should have serious and important themes, they shouldn't be trivial. So the books I write, they would be the kind of stories you would write in an adult novel only they just happen to feature a child at the center of them.

Children's book writers tend to feel quite superior, and adult writers tend to feel they wouldn't know how to write a children's book - which might surprise you because I think a lot of people think it's the other way around.

What exactly was the difference? he wondered to himself. And who decided which people wore the striped pajamas and which people wore the uniforms?