- Professor Sylvest: Look, Romulus, I wish you would be kinder to your mother. You, too, Remus.
- Romulus: [together with Remus] Why?
- Professor Sylvest: Well, she is your mother.
- Remus: Because Mother happened to give birth to us does not automatically grant her a place in our affections.
- Professor Sylvest: Yes. Yes, of course.
- Romulus: Respect must be EARNED, father. Mother's a fool. You know that.
- Remus: Do you now wish us to respect fools? You've always said the contrary.
- The Doctor: What we need is a cave, some utterly comfortless place where you and I can suffer together.
- Peri Brown: Why should I be made to suffer?
- The Doctor: Because you have been chosen. It shall be your humble privilage to misinter unto my needs. They will be... very simple - but nothing must be allowed to interfer with my period of contemplation.