LIV: You’ll think of something. That’s what happens!

DOCTOR: What if I can’t?

HELEN: There’ll be a way out, there always is.

DOCTOR: No, there’s not. Well that’s true every time, except one - except with what gets you.

HELEN: But, I-

DOCTOR: You think we’re doing something special? Surviving whatever life’s thrown at you so far isn’t a skill! It’s called ‘still being alive’. Everyone you’ve ever met has done it, by definition.

HELEN: I suppose that’s true.

DOCTOR: Just because we’ve managed to muddle through everything so far doesn’t mean we always will. There’s always a way out, until there isn’t. One time, you don’t have an escape route. And for us, I think this might be that time.

LIV: As a med tech, there’s nothing you can say to me that I haven’t said to a hundred grieving families over the years. I’ve seen people die, I’ve had to break the news to bereaved relatives. Tell weeping widows that’s it’s going to get better, and it’s a rotten job to do - every time. That’s why I don’t give up. Not until I’m certain. I try and I try until there’s no hope at all, until every last option is exhausted and then I keep trying. I keep hoping for a - a miracle

HELEN: Miracles don’t happen

LIV: Not if you don’t make them.

LIV: It’s only worth giving up if you’ve given it the best shot you’ve got.