You could only draw conclusions about my personal sexual politics if you proceed from the assumption that I was presenting the characters as the way it is and the way it ought to be. But both are clearly defined as deranged – it’s love among the mad. He’s a psycopath, so is she. She’s prepared to throw him to the dogs until he works out the code, he’s prepared to let her nearly get executed. They’re not really going to buy a house and a Volvo together. I’m not saying this is how people should date!

I think of myself as a writer with a sense of humour rather than a comedy writer. Happy to tell a story with lots of jokes in it - I wouldn't know how to do jokes without the story.

The Doctor: 'You know when grown-ups tell you everything's going to be fine, but you really think they're lying to make you feel better?' Amelia: 'Yeah...' The Doctor: 'Everything's going to be fine.

Between the marriages, I shagged my way round television studios like a mechanical digger.

You don't want to take over the universe. You wouldn't know what to do with it beyond shout at it.

Madness is just what a genius looks like to a tiny mind.

You want weapons? We're in a library! Books! The best weapons in the world!