There's something really cool about scaring children. Traumatize a generation, that's what it's all about.

Amy Pond: 'I thought... well, I started to think you were just a madman with a box.' The Doctor: 'Amy Pond, there's something you better understand about me, 'cause it's important and one day your life may depend on it. [He Smiles] I am definitely a madman with a box.

Demons run when a good man goes to war. Night will fall and drown the sun when a good man goes to war. Friendship dies and true love lies. Night will fall and the dark will rise when a good man goes to war. Demons run but count the cost; the battle's won but the child is lost.

Writing for adults often means just increasing the swearing - but find an alternative to swearing and you've probably got a better line.

I don't know. I can't tell the future I just work there.

Twins are under-represented in the media. Hamlet - never twins. Hamlet Twins Of Denmark. King And Queen Lear. It would work. Come on, more twins on television.

You have to take your own bold approach, and if you do you will be rewarded with success. Or calamitous failure. That can happen too.