FIRST DOCTOR: There is good and there is evil. I left Gallifrey to answer a question of my own. By any analysis, evil should always win. Good is not a practical survival strategy - it requires loyalty, self-sacrifice and love. And so, why does good prevail? What keeps the balance between good and evil in this appalling universe? Is there some kind of logic? Some mysterious force?

BILL: Perhaps it's just... a bloke.

FIRST DOCTOR: A... bloke?

BILL: Yeah! Perhaps it's just some bloke, wandering around, putting everything right when it goes wrong.

FIRST DOCTOR: Well, that would be a nice story, wouldn't it?

BILL: That would be the best.

FIRST DOCTOR: You've saved him.

TWELFTH DOCTOR: Both of them. Never hurts, a couple fewer dead people on the battlefield.

FIRST DOCTOR: So, that's what it means to be a doctor of war.

DOCTOR: Goodbye, Zoe.

ZOE: Goodbye, Doctor. Will we ever meet again?

DOCTOR: Again? Now, Zoe, you and I know, time is relative, isn't it?

ZOE: How do you know the next section to this one is an opposite pole?

DOCTOR: Well I don't, Zoe.

ZOE: Well, if it's similar, your idea won't work, will it? We'll just shoot off in the opposite direction.

DOCTOR: Zoe, don't be such a pessimist.

ZOE: Of course he can. The Doctor's almost as clever as I am.

ISOBEL: Well, all I need is my cameras from the house and then I'm all set.

BRIGADIER: Now, wait a minute, This is hardly a job for you.

ISOBEL: Why ever not?

BRIGADIER: Well, you're a young woman. This is a job for my men.

ISOBEL: Well, of all the bigoted, anti-feminist, cretinous remarks-

BRIGADIER: This is no job for a girl like you. Now that's final.

ISOBEL: Oh, you, you, you man!

BRIGADIER: I'll get in touch with my photographic unit and get them onto it.

ISOBEL: Oh, that stupid bigoted idiotic-

JAMIE: Aye, well, he's right, you know.

ZOE: Jamie McCrimmon!

JAMIE: Well, he is.

ZOE: Just because you're a man you think that you're superior, do you?

JAMIE: Now, I didn't say that. Of course, it's true.

ZOE: Is it really? Right. Coming, Isobel?

ISOBEL: What a splendid idea.

JAMIE: Where are you going?

ZOE: Do you think we should let him come with us?

ISOBEL: Oh, I don't know. Men aren't much good in situations like this.

JAMIE: Just a moment. Where are you're going?

ISOBEL: London. Coming?

JAMIE: London? Now we shouldn't do anything without the Doctor! Och.

ISOBEL: You're still worried about your two friends, aren't you?

ZOE: Yes, a bit.

ISOBEL: They can't have got themselves into any sort of trouble, can they?

ZOE: Oh, you wouldn't say that if you knew them. If there's trouble to be found, the Doctor and Jamie can't miss it.

(The sides of the TARDIS come apart, leaving Jamie and Zoe lying on the console, hanging on grimly as it slowly spins in the blackness.)

ZOE: Jamie, the Doctor!

(Zoe screams, a lot. The Doctor is spinning, eyes closed, as the console disappears into a sudden mist.)

DOCTOR: Which way, do you think?

ZOE: To the right.

DOCTOR: They both look equally unattractive to me.

ZOE: But it must be to the right. I've been working it out as we went along.

JAMIE: Doctor.

DOCTOR: Shush. How?

ZOE: Well, as soon as we avoided the dead ends, it soon fell into a clear pattern. One left, two right, three left, four right and so on. It's a simple arithmetic progression.

JAMIE: Yes, but Doctor.

DOCTOR: Shush, Jamie.

DOCTOR: What it is to have an arithmetical brain. What do you want?

JAMIE: The thread's run out. Now, should we not go back?

DOCTOR: No, you stay here.

JAMIE: Ah.

DOCTOR: And Zoe and I will explore a little further. There must be another way out of this maze and I mean to find it.

JAMIE: You're just not trained for an emergency like this.

ZOE: Well, that's the whole point. What good am I? I've been created for some false kind of existence where only known kinds of emergencies are catered for. Well, what good is that to me now?

JAMIE: Hey, we're not done yet, you know.

ZOE: And if we survive? What then, Jamie? Suppose we do get ourselves out of this mess. What have I got left? A blind reliance on facts and logic.

ZOE: I don't want to be thought of as a freak. Leo said I was like a robot, a machine. I think he's right. My head's been pumped full of facts and figures which I reel out automatically when needed, but, well, I want to feel things as well.

BEN: Well, it better be 1966 or I'm in dead trouble, Doctor. Well, anyway, wherever it is, it can't be as bad as going back to them days.

DOCTOR: My dear boy, it could be a great deal worse.

DODO: What are my instructions?

(The machine makes some groaning noises and then finally produces coherent sounds.)

WOTAN: Doctor Who is required. Bring him here.

DOCTOR: You know, my dear, there's something very satisfying about destroying something that's evil, don't you think?

DODO: (enthusiastically) YES!

JANO: I do not understand you, Doctor. You, who have accepted our honors gladly. How can you condemn this great, artistic and scientific civilization because of a few wretched barbarians?

DOCTOR: So your rewards are only for the people that agree with you?

JANO: No, no of course not, but if you are going to oppose us-

DOCTOR: Oppose you! Indeed I am going to oppose you! Just in the same way that I oppose the daleks or any other menace to common humanity!

JANO: I'm sorry you take this attitude, Doctor. It is most unscientific. You are standing in the way of human progress

DOCTOR: Human progress, Sir. How dare you call your treatment of these people progress!

JANO: They are hardly people, Doctor. They are not like us.

DOCTOR: I fail to see the difference.

JANO: Do you not realise that all progress is based on exploitation?

DOCTOR: Exploitation indeed! This, Sir, is protracted murder!

JANO: We have achieved a great deal merely by the sacrifice of a few savages!

DOCTOR: The sacrifice of even one soul is far too great!

DODO: Who's the Celestial Toymaker?

DOCTOR: He's a power for evil. He manipulates people and makes them into his playthings. Whatever you do, neither of you must look at that screen. It's a trap.

DOCTOR: Well open your eyes, my dear child, otherwise you won’t be any use to me, will you?

DODO: Okay.

DOCTOR: What did you say?

DODO: I said, okay.

DOCTOR: Yes, I thought you did. Now once this crisis is over, I’m going to teach you to speak English.

DOCTOR: Well, I can assure you, my dear Barbara, Napoleon would never have believed you.

IAN: Yes, Doctor, but supposing we had written Napoleon a letter, telling him, you know, some of the things that were going to happen to him.

SUSAN: It wouldn't have made any difference, Ian. He'd have forgotten it, or lost it, or thought it was written by a maniac.

BARBARA: I suppose if we'd tried to kill him with a gun, the bullet would have missed him.

DOCTOR: Well, it's hardly fair to speculate, is it? No, I'm afraid you belittle things. Our lives are important, at least to us. But as we see, so we learn.

IAN: And what are we going to see and learn next, Doctor?

DOCTOR: Well, unlike the old adage, my boy, our destiny is in the stars, so let's go and search for it.

DOCTOR: My dear girl, the one purpose in growing old is to accumulate knowledge and wisdom, and to help other people.

SUSAN: So I’m to be treated like a silly little child.

DOCTOR: If you behave like one, yes.

SUSAN: Oh, look, Grandfather. I understand the Sensorites. They’re timid little people. Because their minds and mine can communicate sometimes, they trust me.

DOCTOR: Yes, and I assure you we shall make good use of that fact, but not without discussions. You will not make decisions on your own accord. Now, do you understand? Is that quite clear? Well, is it?

SUSAN: Look, I’m not saying I’m as clever as you, of course I’m not. But I won’t be pushed aside. I’m not a child anymore, Grandfather. I’m not.

DOCTOR: Oh, Susan, Susan.

SUSAN: I was going to say, why do you trust your people?

1ST ELDER: Why do you want to make me doubt them?

SUSAN: Trust can’t be taken for granted. It must be earned. I trust you, but only because I know you.

1ST ELDER: But Susan, our whole life is based on trust.

SUSAN: Yes, and that might be your downfall. Look you don’t trust the ground you walk on until you know it’s firm, do you. So why trust your people blindly?

1ST ELDER: When I listen to you, you who are so young among your own kind, I realise that we Sensorites have a lot to learn from the people of Earth.

SUSAN: Grandfather and I don’t come from Earth. Oh, it’s ages since we’ve seen our planet. It’s quite like Earth, but at night the sky is a burned orange, and the leaves on the trees are bright silver.

1ST ELDER: My mind tells me that you wish to see your home again, and yet there is a part of you which calls for adventure. A wanderlust.

SUSAN: Yes. Well, we’ll all go home some day. That’s if you’ll let us.

1ST ELDER: I think I will.

SUSAN: When will we get back, Grandfather?

DOCTOR: I don’t know, my dear. This old ship of mine seems to be an aimless thing. However, we don’t worry about it, do we? Do you?

SUSAN: Sometimes I feel I’d like to belong somewhere, not just be a wanderer. Still, I’m not unhappy.

DOCTOR: Good, good.

DOCTOR: Yes, it all started out as a mild curiosity in a junkyard, and now it's turned out to be quite a, quite a great spirit of adventure, don't you think?

IAN: Yes. We've had some pretty rough times and even that doesn't stop us. It's a wonderful thing, this ship of yours, Doctor. Taken us back to prehistoric times, the Daleks.

SUSAN: Marco Polo, Marinus.

BARBARA: And the Aztecs.

DOCTOR: Most extraordinary. He ran away from me!

SUSAN: (laughs) That must have looked funny. Flip, flap, flip, flap.

DOCTOR: I can assure you he was very mobile, my child. Come along, let’s get into the First Elder’s room. Come along.