If you enjoy math and you write novels, it's very rare that you'll get a chance to put your math into a novel. I leapt at the chance.

I am really interested in eccentric minds. It's rather like being fascinated by how cars work. It's really boring if your car works all the time. But as soon as something happens, you get the bonnet up. If someone has an abnormal or dysfunctional state of mind, you get the bonnet up.

If you enjoy math and you write novels, it's very rare that you'll get a chance to put your math into a novel. I leapt at the chance.

What I love about the theatre is that it's always metaphorical. It's like going back to being a kid again, and we're all pretending in a room. Sometimes, when the pretending really works, I find it much, much more moving than something on film.

I've worked in television long enough to know that when you stop enjoying that type of thing you go home and do something else.

The most difficult book I wrote was the fourth in a series of linked children's books. It was like pulling teeth because the publisher wanted exactly the same but completely different. I'd much rather just do something completely different even if there's a risk of it going wrong.

Sometimes we get sad about things and we don't like to tell other people that we are sad about them. We like to keep it a secret. Or sometimes, we are sad but we really don't know why we are sad, so we say we aren't sad but we really are.