(Carol is having an ultrasound)Carol: What? Mark, what?
Mark: Heartbeat.
Carol: Yes, Mark, Elizabeth already said that. What?
Elizabeth: No, what he means is... there are two heartbeats.
Carol: (shocked) Twins?!
Mark: Elizabeth, I don't know, I don't know what's going to happen...but I do know how I feel and I feel like I've found something amazing, and I want to be here. I want to get to know you. We cannot be scared. I would hate to miss another boat.
(the two kiss for the first time)
Anspaugh: Ah, I see. A "Big Brother is watching" sort of thing.
Dr. Anspaugh is referring to the classic dystopian novel 1984, written by English author George Orwell and published in 1949. The principle behind Big Brother is that no one can do anything without their actions being monitored by the ruling party.