“Now... Just run.' [said the Doctor.]One of the things you learn very quickly around the Doctor is never to question him when he says that word. You just run. It's almost like breathing.”

“Why can't you just say 'don't breathe the water' like a normal person?""Because I'm a doctor, and they teach us never to use little words where big ones will do.”

“The Doctor: This is bad, I don't like this. [kicks console and yells in pain] Never use force, you just embarrass yourself. Unless you're cross, in which case... always use force! Amy: Shall I run and get the manual? The Doctor: I threw it in a supernova. Amy: You threw the manual in a supernova? Why? The Doctor: Because I disagreed with it! Now stop talking to me when I'm cross!”

“ Dalek Sec: The Doctor will open the Ark! The Doctor: Ha ha, the Doctor will not. Dalek Sec: You have no way of resisting! The Doctor: Mm, you got me there. [withdrawing the sonic screwdriver] Although, there is always this. Dalek Sec: A sonic probe? The Doctor: [with jocular bravado] That's screwdriver. Dalek Sec: It is harmless. The Doctor: Ohh, yes. Harmless is just the word: that's why I like it! Doesn't kill, doesn't wound, doesn't maim. But I'll tell you what it does do: It is very good at opening doors. [He pushes the switch and the doors explode inwards; Jake's squad and some Cybermen run in and open fire.] ”

“LEELA: 'To be, or not to be, that is the question.' That is a very stupid question!THE DOCTOR: It's Shakespeare.LEELA: And that is a very stupid name. You do not shake a spear, you throw it! Throwspeare, now that is a name.”

“When you run with the Doctor, it feels like it'll never end. But however hard you try you can't run forever. Everybody knows that everybody dies and nobody knows it like the Doctor. But I do think that all the skies of all the worlds might just turn dark if he ever for one moment, accepts it. Everybody knows that everybody dies. But not every day. Not today. Some days are special. Some days are so, so blessed. Some days, nobody dies at all. (In the library, the Doctor walks back to the TARDIS. He stops, looking at the doors. Then he raises his hand, and stands there poised like that for a long moment. Finally he snaps his fingers. The doors open. He smiles slowly and walks in, joining Donna. Then he snaps his fingers again, and the doors close. River's voice continues over this.) Now and then, every once in a very long while, every day in a million days, when the wind stands fair, and the Doctor comes to call... everybody lives.”