“Courage isn’t just a matter of not being frightened, you know. It’s being afraid and doing what you have to do anyway.”

“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.”

“The very powerful and the very stupid have one thing in common. They don’t alter their views to fit the facts, they alter the facts to fit their views. Which can be uncomfortable if you happen to be one of the facts that needs altering.”

“Anybody remotely interesting is mad in some way or another.”

MIKE: I found him wandering the streets.

DOCTOR: I was not wandering the streets. I was merely contemplating certain local cartographic anomalies.

ROMANA: Yes, they taught me at school how to stop my hearts.

TYSSAN: Hearts? How many have you got?

ROMANA: One for casual, one for best.

“Do you feel like arguing with a can of deodorant that registers nine on the Richter scale? Run!”

BELAZS: What are you doing here?

DOCTOR: That's a very difficult question. Why is everyone round here so preoccupied with metaphysics?

SPANDRELL: I think you're going to be executed for it. They are preparing the vaporisation chamber now. You have about three hours to live, Doctor.

DOCTOR: What? Well, that's monstrous. Vaporisation without representation is against the constitution.

“I say, what a wonderful butler. He's so violent.”

DAVROS: The Daleks shall become Lords of Time! We shall become all-

DOCTOR: - Powerful. Crush the lesser races. Conquer the galaxy. Unimaginable power. Unlimited rice pudding, et cetera, et cetera.

“Do you know like we were saying about the Earth revolving? It's like when you were a kid. The first time they tell you the world's turning and you just can't quite believe it because everything looks like it's standing still. I can feel it. The turn of the Earth. The ground beneath our feet is spinning at a thousand miles an hour, and the entire planet is hurtling round the sun at sixty seven thousand miles an hour, and I can feel it. We're falling through space, you and me, clinging to the skin of this tiny little world, and if we let go. That's who I am. Now, forget me, Rose Tyler. Go home.”

DOCTOR: He asked you a question. Will you help me?

CLARA: You shouldn't have been listening.

DOCTOR: I wasn't. I didn't need to. That was me talking. You can't see me, can you? You look at me, and you can't see me. Have you any idea what that's like? I'm not on the phone, I'm right here, standing in front of you. Please, just, just see me.

“I can't! Why is it always me? Why is it never anybody else's turn? Can't I just lose? Just this once?”

“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?”

“I've finally run out of corridor. There's a life summed up.”

“We all change, when you think about it. We're all different people all through our lives. And that's okay, that's good, you've got to keep moving, so long as you remember all the people that you used to be. I will not forget one line of this. Not one day. I swear. I will always remember when the Doctor was me.”

“Without hope. Without witness. Without reward.”

“If you could touch the alien sand and hear the cries of strange birds and watch them wheel in another sky, would that satisfy you?”

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.

CLARA: What are you doing?

MISSY: Murdering a Dalek. I'm a Time Lady. It's our golf.

ROSSINI: (Italian) Who the heck are you? Well?

MASTER: I am usually referred to as the Master.

ROSSINI: Oh? Is that so?

MASTER: Universally.

ACE: But when?

DOCTOR: Are you looking for the butterfly?

ACE: What the one who beats its wings and tips the balance, so the hurricane forms? There isn't one, is there?

DOCTOR: Not often. They just tell the butterflies that to keep them happy.

ACE: I should have known.

DOCTOR: No, mostly they break the butterfly on the wheel of time. But over the decades, the millions of butterflies, the weather still changes somehow. That's time. A million, multi-coloured pieces of time.