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 looked the boy up and down as if he had never seen a child before and wasn't quite sure what he was supposed to do with one: eat it, ignore it or kick it down the stairs.

Bruno: "Why do you wear pajamas all day?" Shmuel: "The soldiers. They took all our clothes away." Bruno: "My dad's a soldier, but not the sort that takes people's clothes away."

The thing about exploring is that you have to know whether the thing you've found is worth finding. Some things are just sitting there, minding their own business, waiting to be discovered. Like America. And other things are probably better off left alone. Like a dead mouse at the back of the cupboard.

There is cruelty in the world Eliza, you can see that, can't you? It surrounds us. It breathes on us. We spend our life trying to escape it.

. . .only the victims and survivors can truly comprehend the awfulness of that time and place; the rest of us live on the other side of the fence, staring through from our own comfortable place, trying in our own clumsy ways to make sense of it all.

Today people can see and protest all the different interests that want war to happen, the people it financially benefits. The First World War wasn't fought for that reason. The Second World War wasn't fought for that reason. Your entire country and way of life could be overtaken.