11대 닥터 맷 스미스는 2013년 크리스마스 스페셜을 끝으로 떠난다.
9대 닥터부터 봤는데 맷 스미스가 연기한 닥터와 헤어지는 게 제일 아련하고 아릿하고 그렇다.
River: It's hard to leave when you haven't said goodbye.
The Doctor: Then tell me, because I don't know. How do I say it?
River: There's only one way I would accept. If you ever loved me, say it like you're going to come back.
The Doctor: Well then. See you around, Professor River Song.
River: 'Til the next time, Doctor.
The Doctor: Don't wait up.
River: Oh there's one more thing.
The Doctor: isn't there always.
River: I was mentally linked with Clara. If she's really dead then how can I still be here.
The Doctor: Okay, How?
River: Spoilers. Goodbye. Sweetie.
