CLARA: No, listen, whatever happens next, wherever she is sending you, I know what you're capable of. You don't be a warrior. Promise me. Be a doctor.
DOCTOR: What's the point of being a doctor if I can't cure you?
CLARA: Heal yourself. You have to. You can't let this turn you into a monster so I'm not asking you for a promise. I'm giving you an order. You will not insult my memory. There will be no revenge. I will die and no one else here or anywhere will suffer.
DOCTOR: What about me?
CLARA: If there's something I could do about that, I would. Guess we're both just gonna have to be brave.