The Doctor: I've met Beethoven. Nice chap. Very intense. Loved an arm-wrestle.
The Doctor: Where's Bennett? We need to get going.
O'Donnell: Oh, he's still throwing up. "One small step for man, one giant... Bleaurgh."
The Doctor: You seem to know an awful lot about me.
O'Donnell: I used to be in military intelligence. I was demoted for dangling a colleague out of a wind.
The Doctor: In anger.
O'Donnell: Is there another way to dangle someone out of a window?
Bennett: You're from Tivoli, aren't you?
Prentis: The most invaded planet in the galaxy! Our capital city has a sign saying, "If you occupied us, you'd be home by now."
Bennett: My first proper alien. And he's an idiot.
The Doctor: I have to die.
Clara: No. You can change things.
The Doctor: I can't. Even the tiniest change, the ramifications could be catastrophic, could spread carnage and chaos across the universe like ripples on a pond. Ah, well, I've had a good innings. This regeneration is a bit of a clerical error anyway.
The Doctor: That's the thing about knowing you're going to die. You've got nothing left to lose.
The Doctor: Right. That's it. I've erased the memory of the writing. Though you might find you've lost a couple of other memories too. People you went to school with, previous addresses or how to drink liquids.