“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.”

“Who I am is where I stand. Where I stand is where I fall.”

“The Doctor? No, I don't think so! No, dear me, no! You may be a Doctor, but I am the Doctor. The original, you might say!”

“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?”

MISSY: Exciting, isn't it? Watching the Cybermen getting started.

DOCTOR: They always get started. They happen everywhere there's people. Mondas, Telos, Earth, Planet 14, Marinus. Like sewage and smartphones and Donald Trump, some things are just inevitable.

“People plus technology minus humanity. The internet, cyberspace, Cybermen. Always read the comments, because one day they'll be an army.”

MASTER: Is the future going to be all girl?

DOCTOR: We can only hope.

“Without hope. Without witness. Without reward.”

“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: My entire understanding of physical space has been transformed! Three-dimensional Euclidean geometry has been torn up, thrown in the air and snogged to death! My grasp of the universal constants of physical reality has been changed forever!

DOCTOR: Sorry. I've always wanted to see that done properly.

NARDOLE: Are you having an emotion?

DOCTOR: I know I can help her.

NARDOLE: Yeah. Look at that face, he's having an emotion. Yeah. Yes, look at that bit, yeah, he's doing emotions.

“Time And Relative Dimension In Space. TARDIS for short. You're safe in here. You're safe in here and you always will be.”

BILL: Look at this place. It's like a-

DOCTOR: Spaceship.

BILL: - kitchen.

DOCTOR: A what?

BILL: A really posh kitchen, all metal. What happened with the doors, though? Did you run out of money?

DOCTOR: What you are standing in is a technological marvel. It is science beyond magic. This is the gateway to everything that ever was, or ever can be.

BILL: Can I use the toilet?