- The Doctor: Veruna is where one of the last surviving groups of mankind took shelter in the Great... er. Yes. Well, I suppose you've got all that to look forward to, haven't you.
- Tegan: In the Great what, Doctor?
- The Doctor: All civilisations have their ups and downs.
- Vislor Turlough: [Reading gleefully from the TARDIS log] Fleeing from the imminence of a catastrophic collision with the Sun, refugees from the doomed planet Earth...
- The Doctor: Yes, that's enough, Turlough.
- The Doctor: I'm not helping you, officially. And if anyone happens to ask whether I made any material difference to the welfare of this planet, you can tell them I came and went like a summer cloud.
- The Doctor: [Convinces the Gravis that Tegan is an android] I got this one cheap because the walk's not quite right... And then there's the accent...
- The Doctor: [Speaking of the TARDIS] As an invasion weapon, you'd have to agree that it's about as offensive as a chicken vol-au-vent.