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.

I like the idea of standalone novels. I always found with series of books, it's something that publishers love obviously because they can make a lot of money and they build an audience from book to book, but I don't like that as a writer. I prefer the idea of just telling a story, completing it within your book, and moving on and not forcing a child to read eight of them.

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.

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.

I don't buy into the idea that an Irish writer should write about Ireland, or a gay writer should write about being gay. But when I found the right story, I saw it as an opportunity to write about being a teenager and being gay. Most people, whether you're gay or straight or whatever, have experienced that relationship where one person is much more interested than the other.

War today is such a more visible thing. We see it on television, on CNN. In 1914, war was a concept.

Their lost voices must continue to be heard.