DOCTOR: Nothing’s sad until it’s over, and then everything is.

CLARA: No. Why would you even do that? I was dead! I was dead and gone. Why? Why would you even do that to yourself?

DOCTOR: I had a duty of care.

DOCTOR: It doesn't matter what the Hybrid is. It only matters that I convinced them that I knew. Otherwise they'd have kicked me out, I'd have had nothing left to bargain with.

CLARA: What were you bargaining for?

DOCTOR: What do you think? You. I had to find a way to save you.

DOCTOR: Never eat pears. They're too squishy and they always make your chin wet. That one's quite important. Write it down.

CLARA: I don't think I could ever forget you.

DOCTOR: Clara, I don't think you're ever going to have to.

CLARA: There has to be something I can do.

DOCTOR: Smile for me. Go on, Clara Oswald, one last time.

CLARA: How could I smile?

DOCTOR: It's okay. Don't you worry. I'll remember it.

DOCTOR: Run like hell.

CLARA: What?

DOCTOR: Run like hell because you always need to. Laugh at everything because it's always funny.

CLARA: No, stop it. You're saying goodbye. Don't say goodbye.

DOCTOR: Never be cruel, never be cowardly, and if you ever are, always make amends.

DOCTOR: When something goes missing, you can always recreate it by the hole it left. I know that there was an ice warrior on the submarine and a mummy on the Orient Express. I know we sat together in the cloisters and she told me something very important, but I have no idea what she said... Or what she looked like... Or how she talked... Or laughed.

CLARA: You don't know who you're looking for, I mean... She could be me, for all you know.

DOCTOR: There's one thing I know about her. Just one thing. If I met her again, I would absolutely know.

CLARA: You said memories become stories when we forget them. Maybe some of them become songs.

DOCTOR: A long time ago, there was a student at the Academy. He got in here, disappeared for four days. Showed up in a completely different part of the city. Said the Sliders talked to him, they showed him the secret passage out. And we just need the code.

CLARA: What, and the kid told you the secret?

DOCTOR: Ah, no, he didn't tell anyone anything. He went completely mad, never right in the head again. So they say. Last I heard, he stole the moon and the President's wife.

CLARA: Was she... Was she nice, the President's wife?

DOCTOR: Ah well, the was a lie put about by the Shabogans. It was the President's daughter. I didn't steal the moon, I lost it...

CLARA: I'd know you anywhere.