Don't play games with me! You just killed someone I like, that is not a safe place to stand! I'm the Doctor, and you're in the biggest library in the Universe. Look me up.

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.

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.

Rule 1: The Doctor lies.

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

You take this cold, remarkable, difficult, dangerous, borderline psychopath man, and you wonder what might have happened to him had he not met his best friend, a friend that no one would have put him with, this solid, dependable, brave, big-hearted war hero. I think people fall in love, not with Sherlock Holmes or Dr. Watson, but with their friendship. I think it is the most famous friendship in fiction, without a doubt.

Well we've moved through the funfair a bit – we've done the rollercoaster, now we're on the ghost train.