- Hedges: Destroy. The reject must be destroyed. Kill. Kill.
- Doctor Who: I can't. I won't.
- Hedges: You must.
- Doctor Who: Whatever it is I'm suffering from seems to thrive on intellectual activity.
- Prof. Marius: Oh, I see. You mean that the harder you think, the more of a grip it seems to take?
- Doctor Who: Yeah. Non-thinkng seems to be the only way to shake it off, but I can't stay mindless for eternity, can I?
- Prof. Marius: [explaining the cloning process] ... your photocopy twin will deteriorate and expire after a maximum life of 10 or 11 minutes.
- Leela: Oh, well, in that case, if you do not mind, I will not stay to see it.