Face of Boe: I had grown tired with the universe, Doctor, but you have taught me to look at it anew.

Doctor: There are legends, you know, saying that you’re millions of years old.

Face of Boe: That would be impossible.

Doctor: Wouldn’t it just. I got the impression there was something you wanted to tell me.

Face of Boe: The great secret.

Doctor: So the legend says.

Face of Boe: It can wait.

Doctor: Oh, does it have to?

Face of Boe: We shall meet again, Doctor. For the third time, for the last time. And the truth shall be told. Until that day… (disappears)

Doctor: That is enigmatic. That… That is textbook enigmatic.

From Doctor Who – Season 2 Episode 1: ‘New Earth’ (2×01) | Produced by BBC