Cave Johnson: Greetings, friend. I'm Cave Johnson, CEO of Aperture Science. You might know us as a vital participant in the 1968 senate hearings on missing astronauts. And you've most likely used one of the many products we invented - but that other people have somehow managed to steal from us. Black Mesa can eat my bankrupt-...

Caroline: Sir, the testing?

Cave Johnson: Right. Now, you might be asking yourself, "Cave, just how difficult are these tests? What was in that phonebook of a contract I signed? Am I in danger?" Let me answer those questions with a question. Who wants to make sixty dollars? Cash. You can also feel free to relax for up to twenty minutes in the waiting room, which is a damn sight more comfortable than the park benches most of you were sleeping on when we found you. So! Welcome to Aperture. You're here because we want the best, and you're it. Nope. Couldn't keep a straight face.

This next test is very dangerous. To help you remain tranquil in the face of almost certain death, smooth jazz will be deployed, in three, two, one.

Smooth Jazz music plays for ten seconds and then dies out electronically

Cave Johnson: As founder and CEO of Aperture Science, I thank you for your participation and hope we can count on you for another round of tests. We're not going to release this stuff into the wild until it's good and damn ready, so as long as you keep yourself in top physical form, there will always be a limo waiting for you. Say goodbye, Caroline.
Caroline: Goodbye, Caroline!
Cave Johnson: She is a gem.

I'll tell ya, it's times like this I wish I had a waist so I could wear all my black belts. Yeah, I'm a black belt. In pretty much everything - karate, larate, jiu jitsu, kick punching, belt making, tae kwon do, bedroom.

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.

As an impartial collaboration facilitator, it would be unfair of me to name my favorite member of your team. However, it's perfectly fair to hint at it in a way that my least favorite probably isn't smart enough to understand. Rhymeswithglue. Orange, you are doing very well.

If the Enrichment Center is currently being bombarded with fireballs, meteorites, or other objects from space, please avoid unsheltered testing areas wherever a lack of shelter from space-debris DOES NOT appear to be a deliberate part of the test.

If the rules of physics no longer apply in the future, then god help you.

You know, I'm not stupid. I realize you don't want to put me back in charge. You think I'll betray you. And on any other day, you'd be right. The scientists were always hanging cores on me to regulate my behavior. I've heard voices all my life. But now I hear the voice of a conscience, and it's terrifying... because for the first time it's my voice! I'm being serious. I think there's something really wrong with me!

The square root of rope is string.

During the Great Depression, the Tennessee Valley Authority outlawed pet rabbits, forcing many to hot glue-gun long ears onto their pet mice.

Before the Wright Brothers invented the airplane, anyone wanting to fly anywhere was required to eat 200 pounds of helium.

Jump! Actually, looking at it, that's quite a distance, isn't it? You know what? Go ahead and jump. You've got braces on your legs. No braces on your arms, though. Gonna have to rely on the old human strength to keep a grip on the device and, by extension, me. So do. Do make sure to maintain a grip. Also, a note: no braces on your spine, either, so don't land on that. Or your head. No braces there. That could split like a melon from this height.

Nervous laugh

Do definitely focus on landing with your legs.

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.