DAN: What's the point of being alive if it's not to make others happy?

DOCTOR: We’re all capable of the most incredible change. We can evolve while still staying true to who we are. We can honour who we’ve been and choose who we want to be next. Now’s your chance. How about it?

YASMIN: Have you got family?

DOCTOR: No. Lost them a long time ago.

RYAN: How do you cope with that?

DOCTOR: I carry them with me. What they would've thought and said and done. I make them a part of who I am. So even though they're gone from the world, they're never gone from me.

GRAHAM: And I know if she was here now, she'd tell us not to be so sad. You see, I can hear her saying to me, Graham, we had three glorious years, what're you complaining about? I'm complaining because I wanted more.

GRAHAM: Don't be daft. There's no such thing as aliens. Anyway even if there was, they ain't going to be on a train in Sheffield.

DOCTOR: Come on, Ryan. Come on, Yaz. I'm calling you Yaz, cos we're friends now.

DOCTOR: Why are you calling me madam?

YASMIN: Because you're a woman.

DOCTOR: Am I? Does it suit me?

YASMIN: What?

DOCTOR: Oh yeah, I remember. Sorry, half an hour ago I was a white-haired Scotsman.

DOCTOR: When people need help, I never refuse.

DOCTOR: There's this moment where you're sure you're about to die and then you're born. It's terrifying. Right now I'm a stranger to myself. There's echoes of who I was and a sort of call towards who I am. And I have to hold my nerve and trust all these new instincts. Shape myself towards them. I'll be fine. In the end. Hopefully. Well, I have to be, because you guys need help and if there's one thing I'm certain of, when people need help, I never refuse. Right? This is going to be fun.

DEAN: Halloween's next month, mate. (throws salad at him) Eat my salad, Halloween!