PERI: Phew. Underway at last. I can't say that was much of a holiday. Doctor? I said, I can't say that was much of a holiday.

DOCTOR: Then it's perhaps best left unsaid, Peri. Whereof we cannot speak, thereof we should remain silent. My friend Wittgenstein. A sound philosophical principle.

PERI: Cheer up. After all, we did sort of win, didn't we?

DOCTOR: Win? It's not a tennis match. You were there but you have absolutely no idea what happened.

PERI: Oh.

DOCTOR: Nor have I, come to think of it.