DOCTOR: We need to end the story.

EVELYN: Why? Stories don't end in real life. Sally was right. There's no happy ever after. There's happy, and then there's the day after, which might be happy, and then the day after, which might be happy, but keep on going far enough and you'll get to a day which isn't. There's never a final end.

SALLY: Oh, there is.

DOCTOR: No, Sally. That's the wonderful thing about life. You can't rule a neat line under it. But individual stories can end—and then you move on to the next one. It might be a better story or a worse one. It might be a sequel to something you've done before. The important thing is, that they're your stories. And no one can take that away from you.