RUBY: Why does a land mine have lights on it?

DOCTOR: Oh, capitalism.

RUBY: Excuse me?

DOCTOR: Flashy lights play well in a showroom. Modern warfare. Death by salesman.

RUBY: Where are we?

DOCTOR: In the middle of a war.

RUBY: Oh. I was kind of hoping for a beach.

DOCTOR: Ah. What do you think this is?

RUBY: It's not a beach.

DOCTOR: Give it time. Everywhere's a beach eventually.

DOCTOR: 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.

DOCTOR: Who I am is where I stand. Where I stand is where I fall.

DOCTOR: 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?

MASTER: Is the future going to be all girl?

DOCTOR: We can only hope.

DOCTOR: Without hope. Without witness. Without reward.

FIGURE: Greetings, sinner. Only in darkness are we revealed.

DOCTOR: I never sent for you.

FIGURE: Goodness is not goodness that seeks advantage. Good is good in the final hour, in the deepest pit without hope, without witness, without reward. Virtue is only virtue in extremis. This is what he believes, and this is the reason above all, I love him. My husband. My madman in a box. My Doctor.

(The figure is reading from a diary with a TARDIS-style cover. Then he pulls back the cowl to reveal himself.)

NARDOLE: Your missus wouldn’t approve.

DOCTOR: How the hell did you get here?

NARDOLE: Followed you from Darillium, on the explicit orders of your late wife, River Song. Warning, I have full permission to kick your arse.

DOCTOR: They're not your rescuers. They're your replacements. The end point of capitalism. A bottom line where human life has no value at all. We're fighting an algorithm, a spreadsheet. Like every worker, everywhere, we're fighting the suits.

DOCTOR: 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.

DOCTOR: It's my back.

RIVER: Your back?

DOCTOR: Yeah, my back's playing up. It simply refuses to carry the weight of an entirely pointless stratum of society who contribute nothing of worth to the world and crush the hopes and dreams of working people.

DOCTOR: If you think because she is dead I am weak, then you understand very little. If you were any part of killing her, and you're not afraid, then you understand nothing at all. So, for your own sake, understand this. I am the Doctor. I'm coming to find you, and I will never, ever stop.

You're a loser, Fitz Kreiner, he told himself.

DOCTOR: What do you want me to be? Someone who knows exactly what he’s doing and has it all under control, or just some fellow who makes it up as he goes along, and still makes it happen? Which do you want it to be? Magic tricks, or magic?