DOCTOR: We’ll have the door open in a jiffy.

LIV: Except we still don’t know what’s out there.

HELEN: Please be careful!

DOCTOR: Are you scaredy cats?

HELEN: No

LIV: Just sensible

DOCTOR: Oh come on, we could sit here all day being sensible, we’d still be here next week, filling out risk assessment forms. And how boring would that be?