- Dr. Who: I'm afraid my little trick has rather rebounded on me. What you might call tempting providence, Chesserman.
- Ian Chesterton: Well, don't worry about it now, Doctor. It's happened.
- Dr. Who: Yes. Well, at least you're not vindictive.
- Ian Chesterton: Well I will be if you don't get my name right.
- Dr. Who: Hmm?
- Ian Chesterton: It's "Chesterton".
- Dr. Who: Yes. Hey?
- [irritated]
- Dr. Who: Yes, I know that.
- Dalek: [after taking the anti-radiation drug] Help! Cannot control! Cannot control! Help me! Help me ! Help! Help! Help! Help! Ah! Ah! Ah! Ah!
- Ian Chesterton: The fluid link...
- Susan Foreman: You've lost it?
- Barbara Wright: Ian, you can't have.
- Ian Chesterton: No. The Dalek's took it from me, when they searched me. It must be down there somewhere, in the city.
- Dalek #1: Has the anti-radiation drug distribution been stopped?
- Dalek #2: Yes. Only Daleks in Section 2 and 3 received it. All Daleks in Section 3 have now died.
- Dalek #1: Daleks in Section 2 are to be brought to the sonic chamber.
- Dalek #2: We will direct the air polluted by radiation away from the nuclear reactors into the sonic chamber.
- Dalek #1: And if they do not die, we shall have our answer.
- Dalek #2: But if we need radiation, we can never rebuild the world outside.
- Dalek #1: We do not have to adapt to the environment. We will change the environment to suit us.
- Dalek #1: [over loud speaker] Emergency! Emergency! All Daleks in Section 3 are incapable of working.
- Dalek #2: Section 3? That was the first section to get the anti-radiation drug from received from the Thals.
- Dalek #1: [over loud speaker] Stand-by for a general announcement. This is control. All distribution of the anti-radiation drug is to be stopped immediately. The Dalek race has become conditioned to radiation.
- Dalek #2: But if you are right, we are in danger.
- Dalek #1: All Daleks in Section 3 are dying.
- Dalek #2: They must be examined immediately. Look, the disease has reached us in here.
- Dalek #1: Then we cannot delay.
- Dalek #2: But what are we to do? Is this the end of the Daleks?
- Dalek #1: We need radiation survive. So, we must increase our supply of radiation.
- Dalek #2: But there is only one way to do that.
- Dalek #1: Exactly. We may have to explode another neutron bomb.
- Alydon: There is no indignity in being afraid to die. But there is a terrible shame in being afraid to live.