SARAH JANE: Doctor, you're being childish.

DOCTOR: Well of course I am. There's no point in being grown up if you can't be childish sometimes.

“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.”

“The way I see it, every life is a pile of good things and bad things. The good things don’t always soften the bad things, but vice versa, the bad things don’t always spoil the good things or make them unimportant.”

“Love, in all its forms, is the most powerful weapon we have. Because love is a form of hope. And like hope, love abides. In the face of everything.”

“We’re all stories, in the end. Just make it a good one, eh?”

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

“We’re all capable of the most incredible change. We can evolve while still staying true to who we are. We can honour who we’ve been and choose who we want to be next. Now’s your chance. How about it?”

“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.”

“Every great decision creates ripples, like a huge boulder dropped in a lake. The ripples merge and rebound off the banks in unforeseeable ways. The heavier the decision, the larger the waves, the more uncertain the consequences.”

“Logic, my dear Zoe, merely enables one to be wrong with authority.”

“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.”

“I love humans. Always seeing patterns in things that aren’t there.”

“Of course we should interfere. Always do what you’re best at, that’s what I say.”

“I’d like to see a butterfly fit into a chrysalis case after it spreads its wings. Life depends on change, and renewal.”

“Planets come and go. Stars perish. Matter disperses, coalesces, forms into other patterns, other worlds. Nothing can be eternal.”

“Ah, well… Every dogma has its day.”

“You know how it is; you put things off for a day and next thing you know, it’s a hundred years later.”

“An unintelligent enemy is far less dangerous than an intelligent one, Jamie. Just act stupid. Do you think you can manage that?”

“I suppose the best way to find out where you come from is to find out where you’re going, and then work backwards.”

“Happiness is nothing unless it exists side by side with sadness.”

“Oh, the blossomiest blossom. That's the only sad thing. I want to know what happens next. Right, then. Doctor Whoever-I'm-about-to-be. Tag, you're it.”

“We're all basically primeval slime with ideas above its station.”

DOCTOR: You look very nice in that dress, Victoria.

VICTORIA: Thank you. Don't you think it's a bit--

DOCTOR: A bit short? Oh, I shouldn't worry about that. Look at Jamie's.

“Ace, give me some of that Nitro Nine that you're not carrying.”

STEWART: You are giving us a great deal of trouble.

DOCTOR: I'm delighted to hear that.

MIKE: I found him wandering the streets.

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

“There are worlds out there where the sky is burning, where the sea's asleep, and the rivers dream. People made of smoke, and cities made of song. Somewhere there's danger, somewhere there's injustice, and somewhere else the tea's getting cold. Come on, Ace, we've got work to do!”

ACE: Master? Who's he?

DOCTOR: An evil genius. One of my oldest and deadliest of enemies.

ACE: Do you know any nice people? You know, ordinary people, not power-crazed nutters trying to take over the galaxy?

“It's the end. But the moment has been prepared for.”

“Well, to be fair, I did have a couple of gadgets which he probably didn't, like a teaspoon and an open mind.”

MASTER: I know this is going to be hard to believe, Doctor, but for once I mean you no harm.

DOCTOR: Like Alice, I try to believe three impossible things before breakfast. Go on.

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

DOCTOR: First things first?

ROMANA: Exactly.

DOCTOR: But not necessarily in that order.

KLIEG: Yes, yes, I can see that, but how did you know in the first place?

DOCTOR: Oh, I use my own special technique.

KLIEG: Oh really, Doctor? And may we know what that is?

DOCTOR: Keeping my eyes open and my mouth shut.

“An apple a day keeps the, er... no, never mind.”

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

ADRIC: Will Romana be all right?

DOCTOR: All right? She'll be superb.

“You know, you're a classic example of the inverse ratio between the size of the mouth and the size of the brain.”

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.

“Oh, my giddy aunt.”

“Fear makes companions of all of us.”

“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'm a doctor. But probably not the one you're expecting.”

“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.”

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.

“Without hope. Without witness. Without reward.”

“You know, one day, just one day, maybe, I'm going to meet someone who gets the whole ‘don't wander off’ thing. Nine hundred years of phone box travel, it's the only thing left to surprise me.”

“Sometimes the only choices you have are bad ones. But you still have to choose.”

“Let me tell you about scared. Your heart is beating so hard, I can feel it through your hands. There's so much blood and oxygen pumping through your brain, it's like rocket fuel. Right now, you could run faster and you could fight harder, you could jump higher than ever in your life. And you are so alert, it's like you can slow down time. What's wrong with scared? Scared is a superpower. It's your superpower. There is danger in this room and guess what? It's you.”

DOCTOR: I walked away from the last Great Time War. I marked the passing of the Time Lords.

I saw the birth of the universe and I watched as time ran out, moment by moment, until nothing remained.

No time. No space. Just me.

I walked in universes where the laws of physics were devised by the mind of a mad man.

I've watched universes freeze and creations burn. I've seen things you wouldn't believe. I have lost things you will never understand.

And I know things. Secrets that must never be told. Knowledge that must never be spoken. Knowledge that will make parasite gods blaze.

So come on, then. Take it! Take it all, baby! Have it! You have it all!

“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.”

“Health and safety. Gin and tonic division.”

“Okay. Name - the Doctor. Occupation - not a doctor. Current status - just passing by. Employer - myself. Address - that blue box over there. Now, if you don't mind, I just got snowmanned, and I would like to go home.”

DOCTOR: What the hell are you doing?!

RUBY: I'm... just... There's...

DOCTOR: But what did you do that for? Who sees a ladder and just pops on? A ladder in the sky and you thought, "Yeah, I'll give that a go, babes"?

RUBY: They've got the baby!

“Oh, Jeff. You bad, bad man. Yaz, this is the sort of stuff about which you would ask yourself, if I set fire to this, will it have explosive and potentially devastating consequences? And the answer is yes.”

DOCTOR: What did you do?

NICK: It was a lot of strategic analysis, weapons assessment and battle-ready thinking.

DOCTOR: Did you duck?

NICK: Yeah.

DOCTOR: How would you feel about destroying this place?

SARAH: I mean, I'd have to talk to my insurance providers.

DOCTOR: I don't think you'll be covered for an Act of Dalek.

“Because something seems impossible. We try, it doesn't work, we try again. We learn, we improve, we fail again, but better, we make friends, we learn to trust, we help each other. We get it wrong again. We improve together, then ultimately succeed. Because this is what being alive is. And it's better than the alternative. So come on, you brilliant humans. We go again and we win. Deal?”

DOCTOR: What about you? Any plans? Seeing friends?

DALEK: Daleks do not have friends.

DOCTOR: Yeah, well, you've only got yourselves to blame for that.

DOCTOR: Look, er, I'm sorry about our argument earlier.

ADRIC: So am I. I over-reacted.

DOCTOR: Do you really want to go home?

ADRIC: No, of course not. There's nothing there for me any more.

DOCTOR: So you've done all these calculations for nothing.

ADRIC: Well, it made a point, didn't it? Besides, who knows? I might change my mind again.

NYSSA: If we got the TARDIS working properly again, do you think it would stop landing us in danger all the time?

DOCTOR: Oh Nyssa, I do hope not.

TURLOUGH: Tegan, no!

(The Doctor floats to the surface, face down.)

TEGAN: Doctor!

TURLOUGH: There's nothing we can do.

TEGAN: We can't just leave him.

TURLOUGH: Face it, Tegan. He's drowned.

(The Doctor sinks below the surface again.)