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

“A straight line may be the shortest distance between two points, but it is by no means the most interesting.”

“Our lives are different to anybody else’s. That’s the exciting thing. There’s nobody in the universe can do what we’re doing.”

“I had to face my fear… That was more important than just going on living.”

“I hate computers and refuse to be bullied by them!”

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.

JAMIE: Doctor, come on, will ye? The whole place is going to blow up.

DOCTOR: Oh, it's quite all right, Jamie. The planet is quite safe. There's just going to be a localised volcanic eruption. It'll only affect the island.

JAMIE: Maybe so, but we happen to be on the island.

DOCTOR: Oh, my word!

“Yes. You know, just once I'd like to meet an alien menace that wasn't immune to bullets.”

DOCTOR: That's calmed her down a bit. She's very temperamental when she's roused, isn't she.

JO: You know, I never know whether you're joking or not, I, Ow. Oh, I think I've bruised my tailbone.

DOCTOR: Sorry about your coccyx, Jo, but these little things are sent to try us.

JO: My what?

DOCTOR: Coccyx. Your tailbone.

MASTER [on scanner]: I'm sorry about your coccyx too, Miss Grant. How very sociable of you both to drop in.

“All right, all right, I suppose you want to see my pass? Yes, well, I haven't got one. And I'm not going to tell you my name, either. Now you just tell Brigadier Lethbridge-Stewart that I want to see him. Well, don't just stand there arguing with me, man! Get on with it!”