Barbara Wright: [about the Doctor] Oh, I do wish he wouldn't talk in riddles!
Ian Chesterton: So do I.
Barbara Wright: [finding the dead giant earthworm] Doctor! Doctor! It's a huge snake!
Dr. Who: What? Yes.
Barbara Wright: Let's call the others.
Dr. Who: Oh yeah. Wait, wait, wait. Yes, I think it's dead.
Barbara Wright: It's a fantastic size.
Dr. Who: No eyes. No head. The skin is interesting, isn't it?
Barbara Wright: Interesting?
Dr. Who: It's so dull, not scaly.
Barbara Wright: Doctor, Doctor, are you sure it isn't just sleeping?
Dr. Who: No, no. It's quite dead. Death has its own particular posture and appearance. Yes, yes.
Ian Chesterton: [after finding the giant ant] I wonder what sort of a world could produce an insect that size.
Ian Chesterton: All right. What's your theory, then?
Susan Foreman: These things haven't been made bigger. We've been made smaller.