Adama: Cottle's report on the virus. He thinks it was simply an accidental contamination of the beacon we abandoned on the sickbay ship.
Roslin: Somebody sneezed on it.
Adama: Yeah, an entire race almost wiped out because someone forgot to wipe their nose.
Adama: Posterity really doesn't look too kindly on genocide.
Roslin: You're making the assumption that posterity will define this as genocide. If they do, at least there'll be someone alive to hate us for it.
Hot Dog: (to Racetrack) You can kiss my infected ass.
Cottle: Well, you can kiss it, but it's not infected.
Roslin: That beacon was a signpost to earth.
Adama: I think we're on the right trail, Laura.
Roslin: Yes, we are on the right trail, Bill. (pause) So are the Cylons.
Athena: I made a choice to wear a uniform, to be a person.
Helo: You were a person before you put on that uniform. OK? You were a person before I fell in love with you. You don't have to prove that.
Athena: I have to prove it every day! Let me tell you something, Helo. My people may die. My entire race may be wiped out...but this Cylon will keep her word, even if it means she's the last Cylon left in the universe. Can a human being do that?
Adama: Helo's right on one thing. You start destroying entire races, even mechanical races, you're liable to tear off a piece of a man's soul.
Roslin: The Cylons are coming to Earth. If they find us, they are coming for us. Those are the stakes. They always have been, Bill.
D'Anna Biers: (to Baltar) There's no such thing as coincidence. God wills the universe according to His design.
Baltar: I'm a scientist. And as a scientist, I believe if God exists our knowledge of him is imperfect. Why? Because the stories and myths we have are the products of men, the passage of time. The religion you practice is based on a theory, impossible to prove, yet you bestow it with absolutes like 'there is no such thing as coincidence.'
D'Anna Biers: It's called faith.
Baltar: (to D'Anna) But the truth is, if we knew God's will, we'd all be gods, wouldn't we?
Baltar: (to Caprica Six and D'Anna Biers) I was wrong and it was a mistake and I fully admit my responsibility. It will never happen again and I hope you accept my most, uh, yeah, my most humble apology.
Apollo: Sharon...Athena! See what you can pick up on the computers.
Adama states that the 13th Colony left Kobol at least 3000 years ago.
Lymphocytic encephalitis is an actual disease caused by the Lymphocytic Choriomeningitis Virus. Encephalitis is the acute inflammation of the brain. Brain damage and death can occur as a result of the inflammation.
As Doc Cottle stated in the episode, it is usually carried and transmitted by rodents. Unlike the Colonial survivors, humans on Earth are not immune, although infection does not result in symptoms in most healthy adults. It can, however, be deadly for persons with compromised immune systems.
Tahmoh Penikett (Karl "Helo" Agathon) read the "Previously on Battlestar Galactica" line at the beginning of this episode.
As of the beginning of this episode, there are 41,420 survivors, two fewer than at the beginning of the previous episode, "Torn."
This episode contained a warning about violent content and mature subject matter.