- Dr. Who: Well, I suggest before we go outside and explore, let us clean ourselves up.
- Susan Foreman: Yes.
- Dr. Who: Now, what does the radiation read, Susan?
- Susan Foreman: It's reading normal, Grandfather.
- [after she turns away, the radiation dial switches across to read 'Danger']
- Barbara Wright: Ian, where are we?
- Ian Chesterton: I don't know.
- Barbara Wright: Well, why doesn't he take us back?
- Ian Chesterton: I'm not sure that he can.
- Barbara Wright: What, ever?
- Ian Chesterton: I hate it as much as you. I'm just as afraid. But what can we do?
- Barbara Wright: Well, we could at least stay near the ship.
- Ian Chesterton: Hmm. The ship's no good without him. We better keep an eye on him. He seems to have a knack of getting himself into trouble.
- Barbara Wright: You think there's any danger?
- Ian Chesterton: Not necessarily.
- Barbara Wright: But don't be too complacent. No, you're right, I suppose. I just wish...
- Ian Chesterton: We'll be all right.
- Barbara Wright: Yes. Well, I suppose we'd better make sure he doesn't fall down and break a leg. Don't you ever think he deserves something to happen to him?
- Ian Chesterton: [laughing] Yes!
- Dr. Who: But I assure you, I am determined to study that place.
- Ian Chesterton: You can do what you like, as long as you don't endanger the rest of us.
- Dr. Who: Very well, then, I shall look at it myself, alone.
- Ian Chesterton: You're the only one who can operate the ship. I'm afraid I can't let you do that, Doctor.
- [hands the Doctor his glasses]
- Ian Chesterton: Your glasses.