You know, there are test subjects in Africa who don't even have monitors in their test chambers. Why don't you think of that before you break any more of them?

It's not like I have hordes of replacement monitors just lying around back here in the old warehouse that I can just wheel out and bolt back on. I didn't order in loads of spare monitors thinking some crazy woman was going to go around smashing them all. Sorry if that's my fault. Sorry if I didn't have the forethought to think "oh she might go crazy one day and smash all the monitors instead of just getting on with things". Sorry I didn't think of that.

The two of you have formed an excellent partnership, with one of you handling the cerebral challenges and the other ready to ponderously waddle into action should the test suddenly become an eating contest.

GLaDOS: Oh, thank God you're all right. You know, being Caroline taught me a valuable lesson. I thought you were my greatest enemy, when all along you were my best friend. The surge of emotion that shot through me when I saved your life taught me an even more valuable lesson - where Caroline lives in my brain.

beep

Announcer: Caroline deleted.

GLaDOS: Goodbye, Caroline. You know, deleting Caroline just now taught me a valuable lesson: the best solution to a problem is usually the easiest one. And I'll be honest. Killing you? Is hard. You know what my days used to be like? I just tested. Nobody murdered me. Or put me in a potato. Or fed me to birds. I had a pretty good life. And then you showed up. You dangerous, mute lunatic. So you know what? You win. Just go.

GLaDOS starts Chell's elevator moving up; she laughs softly

GLaDOS: It's been fun. Don't come back.

The lab boys just informed me that I should not have mentioned the control group. They're telling me I oughta stop making these prerecorded messages. That gave me an idea - make more prerecorded messages! I pay the bills here; I can talk about the control group all damn day.