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

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

“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!”

TENTH DOCTOR: What? What?

SIXTH DOCTOR: What are you afraid will happen if you pause for breath?

TENTH DOCTOR: That there won't be another.

“The mediator between the head and the hands must be the heart. If only.”

“Lucie, there's a lot of darkness out there. Some of it where Orbis used to be. But you know something? We wouldn't notice any of it if it weren't for all those little pinpricks of light; planets and stars. And that's where I go whenever I feel sad. The next bit of light in the darkness. Keep on moving. Never look back. Well, hardly ever.”

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

ACE: Oh, "No coloured" signs in 1963, "Pakis out" and petrol bombs in my time - now it's the future and it's ethnic cleansing. Nothing changes, does it?

DOCTOR: Forty years ago, Harper wouldn't even have been out of the ordinary. It does change, you know. Never completely, never all at once, but it does.

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.

“Break, damn you! Break! You've never had a spanner like this thrown in you! Chew on me till your teeth crack. Grind me up till your gears lock. I'm the nail in your tyre, the potato jammed in your exhaust pipe, the treacle poured in your petrol tank. I'm the banana peel beneath your foot, the joker that ruins your straight flush, the coin that always comes up heads and the gun you didn't know was loaded. I am the Doctor!”

I.M. FOREMAN: You’ve never been a woman, have you?

DOCTOR: I’m not sure I’ve ever even been a man.

LEELA: I was so alone in the world of dreams when you left… The wildlands were dark and so quiet. I… I do not wish to be alone.

ROMANA: There will be a place for you with me. For always. Whatever face I wear.

“The best thing that you can do is to change gender again.”

VEEGA: Be careful, Leela.

LEELA: I shall.

VEEGA: You’ve been so good to us over the years.

LEELA: And you have been good to me. I will see you when we return.

VEEGA: Goodbye, Leela.

HAYDEN: It is a necessary evil.

DOCTOR: Oh I've met evils you wouldn't believe, gods and devils, warewolves and vampires, every monster every child's ever imagined creeping out from under the bed and you know what? They're all real. But a necessary evil - that's the only one that's a fiction.

“The audio medium. It can be so deceptive…”

BERNICE: So, do you have a girlfriend?

DOCTOR: No.

BERNICE: Boyfriend?

DOCTOR: No

BERNICE: Model Railway Set?

DOCTOR: Somewhere. The TARDIS is full of surprises.

BERNICE: But you’re not the sort of person that keeps a big table, with tiny trees and signal boxes and things?

DOCTOR: No.

BERNICE: Ah, then you must be interested in law and order.

DOCTOR: No. I like chaos. Big explosions. Rebellions. That sort of thing. Why do you ask?

BERNICE: Because I want to know why you go around in a police box!

DOCTOR: You know what one is?

BERNICE: It’s from my favourite era.

DOCTOR: I could’ve changed it ages ago. But I like the shape. And the motto. Call here for help. That’s what I do. I let the little children sleep safely at night, because I’ve searched through all the shadows and chased the baddies away. I’m what monsters have nightmares about! But everybody’s a monster sometimes. We all do things we regret. And sometimes we have to lose things very precious to us.

“It was all about love in the end, wasn’t it?”

“There is a balance to magic.”

“She is quicksilver. I prefer steel.”

DOCTOR: Sometimes, if you stare at a painting for too long and get too close to it, all you can see are the brushstrokes. The harder you stare, the more formless and meaningless it seems to become.

NYSSA: And that’s your analogy for the whole of the universe, is it? A painting you don’t want to look at too closely in case it doesn’t mean anything?

DOCTOR: I don’t know. Sometimes I think of it that way, yes.

“As for making a difference, I don’t think we really influenced anything at all.”

“It’s all a matter of perspective, isn’t it?”

“I love the State. I venerate the Regime. I love the State. I venerate the Regime. I love the State. I venerate the Regime. Why are you doing this to me?”

“This is the voice of Light City. Welcome to your new work day. Today is High Productivity Day. Your state loves you. Happiness through acceptance.”

“There are other sentient words out there, not all of them as belligerent as Ish. I’ve met a few myself. The Adjective of Noun! The Insouciant Maladictaballoons! And then there was the mysterious simile known only… as.”

“I’m going to kill everything! Everything that crawls, grows, wiggles and swims in all of reality. Bang! The whole lot! Finished! Kaput! Finito-complete-o! Gone! How’s that for a plan?”

DOCTOR: We need to end the story.

EVELYN: Why? Stories don't end in real life. Sally was right. There's no happy ever after. There's happy, and then there's the day after, which might be happy, and then the day after, which might be happy, but keep on going far enough and you'll get to a day which isn't. There's never a final end.

SALLY: Oh, there is.

DOCTOR: No, Sally. That's the wonderful thing about life. You can't rule a neat line under it. But individual stories can end—and then you move on to the next one. It might be a better story or a worse one. It might be a sequel to something you've done before. The important thing is, that they're your stories. And no one can take that away from you.

CHARLEY: Come on. Take my hand.

DOCTOR: But we can see now. We don’t need to hold on to each other.

CHARLEY: I know. Take my hand anyway.

DOCTOR: Even after all this time he cannot understand. I dare not change the course of history. Well, at least I taught him to take some precautions. He did remember to look at the scanner before he opened the doors. Now they're all gone. All gone. None of them could understand. Not even my little Susan, or Vicki. And as for Barbara and Chatterton. Chesterton. They were all too impatient to get back to their own time. And now, Steven. Perhaps I should go home, back to my own planet. But I can't. I can't.

ACE: Don't you have things you hate?

DOCTOR: I can't stand burnt toast. I loathe bus stations. Terrible places. Full of lost luggage and lost souls.

ACE: I told you I never wanted to come back here again.

DOCTOR: And then, there's unrequited love, and tyranny, and cruelty.

ACE: Too right.

DOCTOR: We all have a universe of our own terrors to face.

ACE: I face mine on my own terms.

“'He can take care of himself,' Fitz muttered, starting for the kitchen. He always had, after all, for hundreds of years. Still, at some point his luck was bound to run out. But please not today, Fitz thought, as he grasped the pantry door handle. Please never, as long as I'm with him.”

ANJI: Why does he inspire such loyalty? Why do we think we ought to be helping him and looking out for him?

FITZ: Because he's good. He's bigger than we are, somehow. More full of life.

“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?”

“Stories, hidden inside stories! Ooh, I love all that. Makes me feel right at home.”

“The Doctor led us up, into the fire that was not the fire of salvation but the sort that burns, with smoke and hurt and tortured bodies and death. He walked arm in arm with Turing, and they talked, probably about miracles and the mysteries of the universe, but I couldn’t hear them any more. And anyway, it was probably all in code.”

DOCTOR: Do you know Puff the Magic Dragon?

BERNICE: We went out a few times. He was very immature.

DOCTOR: Do you know the bit where Jackie Paper leaves him? Leaves him all alone?

BERNICE: I really don’t want to hear this.

DOCTOR: The dragon can’t be brave without the little boy. He doesn’t have anything to be brave for. He might as well go, might as well drift off into myth, and just be something in old stories.

BERNICE: But what would happen then? There are other monsters, other terrible things out there beside the Hoothi.

DOCTOR: Many of them. Yes.

BERNICE: Well, they must be fought. Because—and this is important. You can’t just be alone. That’s a childish thing to be. You can’t just isolate yourself from everything, no matter what terrible things have happened. You have to help other people.

DOCTOR: That’s what Jackie Paper would have said.

BERNICE: Oh. Oh, I see.

DOCTOR: What do you think?

DOCTOR: You always were a terrible judge of character. Look at me!

BERNICE: Happily.

DOCTOR: Have you had a good life?

BERNICE: All things considered.

DOCTOR: Quite. And you’ve just saved the universe again.

BERNICE: I have, haven’t I? Something to tell the cats when I get home.

DOCTOR: Cats, eh? Plural?

BERNICE: Plural.

DOCTOR: How many? Not too many?

BERNICE: No such thing. Oh, you’re going to love them. Come on.

DOCTOR: Back home?

BERNICE: And beyond.