Meredith: (opening voiceover) For a surgeon, every patient is a battlefield. They're our terrain. Where we advance, retreat, try to remove all the landmines. And just when you think you've won the battle, made the world safe again. Along comes another landmine.

Owen: Quick and dirty, Cristine!
Cristina: Aah, Cristina! Cristin-a.

Izzie: Are you done beating me up for the day? Because I'd like to go home.
Owen: I was just trying to teach you.
Izzie: You wanna teach us? Take us to the sim lab with the plastic guys who have heart rates, and blood pressure and croupe when you nick an artery.
Owen: Until you apply scalpel to skin, Stevens, you're just going through the motions.
Izzie: That attitude - that's from before. We have the technology now, we don't have to torture live creatures.
Owen: No, you don't get to accuse me of torture. Those animals felt no pain.
Izzie: You don't know that. You don't know that. You don't know what they felt, you don't know how scared they were. Animals are sensitive and intelligent creatures. And that is not me being emotional, that is simply the truth. You want me to learn from your methods? You want me to learn anything from you, then don't stab pigs in front of me and tell me that the sky isn't blue! You are torturing God's creatures in an age where we have the technology that no longer requires us to. If you wanna do that, go ahead - but don't tell me I'm less of a doctor for walking away.

Meredith: (closing voiceover) Some wars result in complete and total victory. Some wars end with a peace offering. And some wars end in hope. But all these wars are nothing compared to the most frightening war of all. The one you have yet to fight.

Izzie mentions she's been sleeping with Alex for only a week, yet they started sleeping together during "There's No 'I' in Team," which is said to have taken place the day before this episode.

Episode Title: Life During Wartime

"Life During Wartime" is the title of a song by Talking Heads.