The Doctor: Doctor Song, you've got that face on again. River: What face? The Doctor: The "He's hot when he's clever" face. River: This is my normal face. The Doctor: Yes it is. River: Oh, shut up. The Doctor: Not a chance.

I write the kind of stuff I'd like to watch.

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.

Amy: "Can I come?" Doctor: "Not safe in here, not yet. Five minutes. Give me five minutes and I'll be right back." Amy: "People always say that." Doctor: "Am I people?...Do I even look like people?...Trust me, I'm the Doctor.

I like that Helen Mirren has been saying the next doctor should be a woman. I would like to go on record and say that the Queen should be played by a man!

The Doctor: I've seen bigger. Clara: Really? The Doctor: Are you joking? It's massive!

Being the only writer on a successful show is very rewarding.