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.

I started reading Dickens when I was about 12, and I particularly liked all of the orphan books. I always liked books about young people who are left on their own with the world, and the four children's books I've written feature that very thing: children that are abandoned by their families or running away from their families or ignored by their families and having to grow up quicker than they should, like David Copperfield - having to be the hero of their own story.

Their lost voices must continue to be heard.

And I have tried to forget him, I have tried to convince myself that it was just one of those things, but it’s difficult to do that when my body is standing here, eight feet deep in the earth of northern France, while my heart remains by a stream in a clearing in England where I left it weeks ago.

Don't make it worse by thinking it's more painful than it actually is.

I was a very quiet child, quite introverted, really. Independent, yes; I didn't need a lot of supervision. Less so than I did when I got older, maybe. But I was a bookish child, not surprisingly. I could sit quite happily in a corner for hours and entertain myself with books.

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.