[David Tennant's] Doctor has such humanity, he seems to understand us and he's very warm, so he's a comforting Doctor to be with, and he enables us to be slightly scarier than we had been.

Writing isn't just a job that stops at six thirty... It's a mad, sexy, sad, scary, ruthless, joyful, and utterly, utterly personal thing. There's not the writer and then me; there's just me. All of my life connects to the writing. All of it.

You’re far more likely to see a naked woman than a naked man. It’s only [seen as] rude because the rest of television is rather tame – it doesn’t actually talk about sex and our bodies and how we feel about them. I’m not out to shock.

The Doctor: Rose... before I go, I just want to tell you: you were fantastic. Absolutely fantastic. And do you know what? [Pause] So was I!

*Throwing bread out of door* AND STAY OUT!

I saw the Fall of Troy! World War Five! I was pushing boxes at the Boston Tea Party! Now I'm gonna die in a dungeon.... [disgustedly] in Cardiff!

There's nothing better than a party that turns into a death trap.