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.

You know what I have too many of around here? Monitors. I was just thinking earlier today I wish I had fewer monitors that were working. So you're actually helping me by smashing them.

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.

Bean counters said I couldn't fire a man just for being in a wheelchair. Did it anyway. Ramps are expensive.

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