“Human progress isn't measured by industry, it's measured by the value you place on a life. An unimportant life. A life without privilege. The boy who died on the river, that boy's value is your value. That's what defines an age. That's what defines a species.”

“Never be cruel. Never be cowardly. Hate is always foolish. Love is always wise. Always try to be nice, but never fail to be kind.”

“Winning? Is that what you think it's about? I'm not trying to win. I'm not doing this because I want to beat someone, or because I hate someone, or because, because I want to blame someone. It's not because it's fun and God knows it's not because it's easy. It's not even because it works, because it hardly ever does. I do what I do, because it's right! Because it's decent! And above all, it's kind. It's just that. Just kind. If I run away today, good people will die. If I stand and fight, some of them might live. Maybe not many, maybe not for long. Hey, you know, maybe there's no point in any of this at all, but it's the best I can do, so I'm going to do it. And I will stand here doing it till it kills me. You're going to die too, some day. How will that be? Have you thought about it? What would you die for? Who I am is where I stand. Where I stand, is where I fall. Stand with me. These people are terrified. Maybe we can help, a little. Why not, just at the end, just be kind?”

(Talking about Missy)

BILL: She's a murderer.

DOCTOR: Enjoying your bacon sandwich?

BILL: Why?

DOCTOR: Because it had a mummy and a daddy. Go tell a pig about your moral high ground.

BILL: So, the Time Lords, bit flexible on the whole man-woman thing, then, yeah?

DOCTOR: We're the most civilised civilisation in the universe. We're billions of years beyond your petty human obsession with gender and its associated stereotypes.

BILL: But you still call yourselves Time Lords?

DOCTOR: Yeah. Shut up.

“All of time and space, everything that ever happened or ever will. Where do you want to start?”

IDRIS: Are all people like this?

DOCTOR: Like what?

IDRIS: So much bigger on the inside.

DOCTOR: Why are you calling me madam?

YASMIN: Because you're a woman.

DOCTOR: Am I? Does it suit me?

YASMIN: What?

DOCTOR: Oh yeah, I remember. Sorry, half an hour ago I was a white-haired Scotsman.

DOCTOR: Yaz, I can't fix myself to anything, anywhere or anyone. I've never been able to. That's what my life is.

YASMIN: Yeah, of course.

DOCTOR: Not because I don't want to, because I might. But if I do fix myself to somebody I know, sooner or later, it'll hurt.

DOCTOR: A wise person once said to me, goodbyes only hurt because what came before was so special. Oh, and it's been so special. You, and Graham, and Ryan, and Dan. Nobody else got to be us. Nobody else got to live our days. Nobody. And my hearts are so full of love of all of you. Oh, I have loved being with you, Yaz. And I have loved being me. I think I need to do this next bit alone.

YASMIN: Let's not say goodbye.

“How many people in the universe get to meet the Doctor, let alone travel with her? We're the lucky ones, Yaz. Enjoy the journey while you're on it. Cos the joy... is worth the pain.”

“If something happens to Umbreen, your whole timeline could be erased. No Yaz! We can't have a universe with no Yaz!”

“It's all right. It's all right, Yaz. One last trip. Where would you choose? What flavour ice cream?”

SUSAN: The TARDIS can go anywhere.

BARBARA: TARDIS? I don’t understand you, Susan.

SUSAN: Well, I made up the name TARDIS from the initials, Time And Relative Dimension In Space. I thought you’d both understand when you saw the different dimensions inside from those outside.

IAN: Just let me get this straight. A thing that looks like a police box, standing in a junkyard, it can move anywhere in time and space?

SUSAN: Yes.

DOCTOR: Quite so.

IAN: But that’s ridiculous.

DOCTOR: Yaz, you go with him.

YASMIN: No. I'm with you. Whatever happens.

“We had a pact, me and him. Every star in the universe, we were going to see them all. But he was too busy burning them. I don't think she ever saw anything.”

MISSY: I am your friend.

DOCTOR: Makes no difference.

MISSY: I know it doesn't. I know I'm going to die. I have to say it, the truth. Without hope. Without witness. Without reward. I am your friend.

DOCTOR: Missy. Missy. You've changed. I know you have. And I know what you're capable of. Stand with me. It's all I've ever wanted.

MISSY: Me too. But no. Sorry. Just, no. (she takes his hand) But thanks for trying.

DOCTOR: Yes, it all started out as a mild curiosity in a junkyard, and now it's turned out to be quite a, quite a great spirit of adventure, don't you think?

IAN: Yes. We've had some pretty rough times and even that doesn't stop us. It's a wonderful thing, this ship of yours, Doctor. Taken us back to prehistoric times, the Daleks.

SUSAN: Marco Polo, Marinus.

BARBARA: And the Aztecs.