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

Rose: Look at you, beaming away like you're Father Christmas! The Doctor: Who says I'm not, red-bicycle-when-you-were-twelve? Rose: [shocked] What? The Doctor: And everybody lives, Rose! Everybody lives! I need more days like this! Go on, ask me anything; I'm on fire!

River Song: Right, I have questions. But number one is this: what in the name of sanity have you got on your head? The Doctor: It's a fez. I wear a fez now. Fezzes are cool.

The Doctor: Don't blink. Don't even blink. Blink and you're dead. Don't turn your back. Don't look away. And don't blink.

Always take a banana to a party.

You can be as beautiful and charming as you'd like, but if you're not terrific at acting, it will mean nothing on the screen.

If you don't expect to like someone and then you do, that's an incredibly exciting moment.