Cave Johnson voice lines

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This is a complete list of Cave Johnson's voice lines from Portal 2.















Intercom messages at the VITRIFIED doors



Perpetual Testing Initiative

  • "Greetings, friend. I'm Cave Johnson, CEO of Aperture Science. As you've no doubt learned after your time in cryosleep, human civilization as we knew it was utterly destroyed over a thousand years ago. We've attempted to rebuild as best we could with the only remaining book on the planet... [sigh] The Rock Says, the autobiography of Dwayne The Rock Johnson. So. Let's all pause for a moment to smell what the Rock was, is, and forever will be... cooking."

Deleted and Extended lines

Note: lines in bold were used in-game.


  • Now, the lab boys were adamant that I do not give you any hints on these tests. To be honest, they think I'm spoiling the results just by talking to you. Hizenstein Uncertainty Principles and so forth. I’ll give ‘em something more practical to be uncertain about. Their next paycheck. Anyway, overruled. If you think I'm affecting your decisions, in any way, don’t be afraid to speak up. I’m not made of glass. That reminds me: Caroline, Do we have a wing made out of glass yet? Let's get on that, Caroline.
  • Cave Johnson again. Just a heads-up: this next test’s dangerous. So if you get hurt, there’s a first aid station close by. Oh! Unless you’re participating in the double blind emergency treatment experiment. Then it’s just placebo first aid. Hold on, lemme check what test this is for… [pages flipping] Uh huh. Uh huh. No sir. I wouldn’t bother with it. What?
  • Caroline, do you think anyone’s gonna make it this far? Should I even bother making a message? What? Yes, I know how to turn it off. No, I don't want to turn it off... Alright, I feel like turning it off now.
  • If you’re hearing this, it means you’re taking a long time on the catwalks between tests. The lab boys say that might be a fear reaction. Well, as a wise man once said, “there’s nothing to fear but fear itself and maybe some mild to moderate jellification of bones.” Besides, to borrow from the voodoo sham known as “psychiatry,” it sounds to me like these eggheads are partaking in what they’d call “projection.” I'm no psychiatrist, but coming from a bunch of eggheads who never did anything more brave than boil some manganese - whatever the hell that accomplishes - that sounds like what they'd call "projection.” THEY didn’t fly into space, storm a beach, or bring back the gold. No sir, we did! It's you and me against the world, son! I like your grit! Hustle could use some work, though. Now let’s solve this thing! Alright. Too much jawing, not enough testing. Let’s get some science done.
    • I'm no psychiatrist, but coming from a bunch of eggheads who never did anything more brave than read a big book – except for Greg who fought a bear once, but he’s not the point here – that sounds like what they'd call "projection”.
  • Science isn't about WHY. It's about WHY NOT. Why is so much of our science dangerous? Why not marry safe science if you love it so much. In fact, why not invent a special safety door that won't hit you on the butt on the way out, because you are fired. Not you, son ("test subject" in-game), you're doing fine. Yes, you. Fired. Box. Your stuff. Out the front door. Parking lot. Car. Goodbye. Caroline, follow him out. Make sure he doesn’t cry all over the carpet.
  • See, some of the lab boys told me it might be better to let ‘em do their science on their own. But here at Aperture Science, we work together as a team! And by team, I mean working together to do what*I say! These facilities stand on the shoulders of one great man. And his lovely assistant.
  • Congratulations! You made it through. The simple fact that you’re standing here listening to me means you’ve made a glorious contribution to science. You’re a national hero. We're going to take your picture, so stand there and smile. Unless you were part of the Plaque Removing Deuterium Fluoride Laser test, in which case you might want to do us all a favor and keep your mouth closed until the bleeding stops. And don't worry: If you're one of our DNA test subjects, and you've got a hand for a face or whatnot, we’ll photograph you from the neck down. 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 planning some wonderful stuff with time travel. So if you never liked your father, why not come on back and try being him? We’re not gonna 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’ll always be a limo waiting for you. Say goodbye, Caroline. She is a gem.


  • For many of you, I realize 60 dollars is an unprecedented windfall, so don’t go spending it all on… Caroline, what do these people buy? Tattered hats? Beard dirt? We’ve made some great advances since introducing our repulsion gel in the fifties, but you already know that, unless you’ve been living under a rock or something. Did we find any of these test subjects living under rocks? Perfect. So anyway. Welcome to Aperture. You’re here because we want the best, and… Caroline, really? This is it? And unfortunately, I guess you’re it.
    • So anyway. Welcome to Aperture. You’re here because we want the best test subjects sixty dollars can buy, and you’re apparently it.
  • Please help yourselves to the art on the wall. An eyeful. Don’t take it. Don’t take anything. It’s all nailed down. In fact, I take that back. Just get moving. Caroline, is the art nailed to the walls? Nevermind. Put more nails in it. Don’t get one of the lab boys to do it either. I want you to do it so it gets done right.
  • I know I said you could loiter for up to twenty minutes. That was a possibility, not a suggestion. You can move along any time. And for god’s sake, don’t touch the upholstery.
  • Well? Get moving. That sixty dollars isn’t hiding in here; it’s waiting for you at the other end of the enrichment sphere.
  • Wait, I know--
  • So, you might be wondering: why you? Simply: Human test subjects get better scientific results than animals. Why? For one, your tramps, lunatics, foundlings, what-have-you, can bring problem-solving ability to test environments with a facility that shames lower ruminants. For another, you have thumbs.
  • Great job, astronaut, war hero and/or Olympian! With your help, we’re gonna change the world! This on? [thump thump] Hey. Listen up down there. That thing up ahead’s called an elevator. Not a bathroom. [sigh] Caroline, has it really come to this? Damn it, you’re right. Damn good science, too. We’re not out of this race yet, Caroline.
  • In case you're interested, there're still some positions available for that bonus opportunity I mentioned earlier. Again: all you gotta do is let us disassemble you. We're not banging rocks together here. We know how to put a man back together. We'll take out any diseases we find in there, too, and replace all the organs that aren't tip top. So that's a complete reassembly. New vitals. Spit-shine on the old ones. Plus we're scooping out tumors. Frankly, you oughtta be paying us. Anyway, volunteers should line up outside Enrichment Sphere Archimedes Bravo.
  • Thank you – [off mic] I can’t believe I’m thanking these people [on mic] – for staggering your way through Aperture Science’s propulsion gel testing. You’ve made some real contributions to society for a change, and for that, humanity is grateful. If you had any belongings, please pick them up now. We don’t want old newspapers and sticks cluttering up the building. Once you’ve gathered your things, grab a compensation voucher, good for 60 dollars worth of stuff from the Aperture Science gift shop. Please only touch items you plan on purchasing. Thanks to the IRS and our patent-stealing competitors, there are parking meters in Duluth that earn more money than we do lately. So there’s no room in the budget to wash coffee mugs that you pick up and then decide not to buy. Caroline, put some extra security in the gift shop to make sure no one decides to take a nap in the t-shirt displays.


  • "First up, conversion gel. [cough]"
  • The bean counters told me we literally could not afford to buy seven dollars worth of moon rocks, much less seventy million. Bought ‘em anyway. Engineers said the moon rocks were too volatile to experiment on. Tested on ‘em anyway. Ground ‘em up, mixed em into a gel. And guess what? Ground up moon rocks are pure poison. I am deathly ill. Still, it turns out they’re a great portal conductor.
  • When you’re making some great science, it helps to keep a positive attitude. Look at Marie Curie. Invented radiology. Won two Nobel prizes. Dumb as a bag of hammers. Thought the light radiation gave off was pretty, walked around with it in bottles. Buried her with a smile on her face.
  • Let me tell you about a fella. Lived thousands of years ago. Only wanted folks to be a little nicer to each other. And in the end, he sacrificed himself to save us all. You know who I’m talking about: Hercules.
  • [snore] Hercules…
  • The point is: if we can store music on a compact disc, why can’t we store a man’s intelligence and personality on one? So I have the engineers figuring that out now. Brain Mapping. Artificial Intelligence. We should have been working on it thirty years ago. But I guess it’s too late for should haves and what ifs. I will say this - and I’m gonna say it on tape so everybody hears it a hundred times a day: if I die before you people can pour me into a computer, I want Caroline to run this place. (Now) she’ll argue. She’ll say she can’t. She’s modest like that. But you make her. Treat her just like you’d treat me. Hell, put her in my computer. I don’t care. Just make sure she’s taken care of. Allright, test’s over. You can head on back to your desk.

Miscellaneous tests

  • Once upon a time there was a scorpion and a frog. The scorpion tells the frog “When I say ‘jump’ I don’t want to hear ‘how high?’ That means you’re not jumping!” Then the frog says “It’s my nature!” Well, be that as it may, we have a lot of tests to do and you are taking a long time on these catwalks and, yes, I broke out of the parable somewhere back there. But the point stands that you need to put some muscle back into your hustle, son.
  • You might have noticed some safety warnings on the walls. Ignore ‘em. I keep telling the Bean Counters danger’s just a natural part of science, but boy they don’t want to hear it. Like telling a paradox to a robot – makes their heads explode.
  • That last test may have made your skeleton magnetic. I don’t know how. But if I were you, I wouldn’t stand next to any sheet metal.
  • Just a quick heads-up. If you suddenly find yourself able to excrete spider silk out of your fingers or the base of your spine, let one of the test associates know, cause that’s actually important.
  • The gel in this next test is probably going to make all of your skin solar-powered. Upside is, you’re not gonna get hungry. Ever. So if you were worried about your waistline, get this: You won’t be able to eat food even if you wanted to.
  • This next test involves molecular dynamics. You’re gonna breathe in a bunch of tiny little robots, and they’re gonna optimize your DNA strands. Exciting stuff. Maybe nothing’ll happen. Or maybe you’ll have a big crab hand by the end of the test, or ten foot legs. It’s up to them. Trust me, I’m as anxious as you are to see how this plays out.
  • The gel in this next test’s gonna recalibrate your molecular whatsamacallits, blah blah blah. Bottom line is, you won’t need to go to the bathroom anymore. Your body’s just gonna process it up like anything else. Side effect might be that everything you eat from now on tastes like urine, though.
  • If you’re not a fan of the cartilage in your body, you are gonna love what this next test might do for you. Honestly, cartilage is like adenoids, or a second kidney. Body doesn’t want it, you don’t need it. Good riddance.
  • Ever wondered what a parallel universe you might be like? Well, stop wondering, because you’re just Hitler. Every parallel universe ever. You. Hitler. We can’t figure it out. Anyway, if you meet him in the next test, don’t kill him. I know, I know. But trust me, it’d be bad.
  • We’re gonna try and collapse three-dimensional space in this next test. We’re not gonna tell you when. Just give us a holler if everything starts looking flat.
  • While you’re completing this next test, we’re gonna test out a new device and see if we can read your thoughts. Don’t let it throw you. Just give us a nod if we’re getting close. You’re thinking about tungsten. Tungsten or zinc. Give us a wave if we nailed it. You’re thinking about the electrolytic production of hydrogen. How close is that? You’re thinking about the color green. Greenish blue. You might be wondering how I’m guessing what you’re thinking through a pre-recorded message. The answer: volume. I recorded a message for every word in the English language. Also: you are thinking about bib lettuce. Tell me I’m wrong. You’re still thinking about tungsten. I don’t blame you. It’s fascinating. Hey, Caroline. I think he’s thinking about you! Photosynthesis. That or fudge. The bacteria inside fudge. Nod your head if I’m getting close.
  • We’re gonna bombard you with a few rays in this next test. Nothing to be concerned about. We’re looking for bacterial contamination and inflammatory disease in your bowels. We put enough pathogens in the waiting room coffee to give diarrhea to an aircraft carrier, so if we don’t spot ‘em, I don’t know what to tell you.
  • This next test might sunburn your eyes a little. Ask a test associate for some sunscreen you can put on your retinas if you think your eyes aren’t man enough to handle it.
  • Bonus test within a test in this next test: we hid a photon somewhere in here. You find it, it’s twenty grand in your pocket. You can keep the photon, too.
  • The human body contains trace amounts of a whole hell of a lot of elements it doesn’t even seem to need. Copper, lead, silicon, cobalt, magnesium, carbon, oxygen. This next test, we’re gonna hit you with some microwaves and boil the worthless elements right out of you. Current hypothesis is it’s not even gonna break your stride. Honestly, what the hell has cobalt ever done for you? Good riddance.
  • With your help, we might eradicate heart and lung disease with this next test. Full disclosure: we’re going to achieve that by trying as hard as we can to make your heart and lungs stop working, then pump you full of some medicine we’ve been working on. Footnote to the disclosure: You’re incredibly brave and we’re proud of you.
  • Alright, this next test, I had to fight really hard for. None of the eggheads thought it was safe enough. I keep telling ‘em danger’s the best part of science, but they don’t want to hear it. It’s like telling a paradox to a robot: Makes their heads explode.
  • Alright, this next test, I had to fight really hard for. None of the eggheads thought it was safe enough. Did you? Ha. Caroline, watch this. You, stand next to him. You with the big head, over there. That’s right, all in a line against the wall. Okay, here we go. You’re fired you’re fired you’re fired you’re fired you’re fired.
  • Don’t eyeball me, son. Don’t snow me. I know an eyeball when I see one. It’s not good, wholesome eye-looking and I won’t stand for it. Eyeballs shouldn’t judge. They just send the information up for the brain to deal with. That’s the job. Get your eyes fixed, son. Caroline. Make appointments with all my engineers for eye surgery. Sign me up for it, too. From now on, everybody’s doing their eye-looking properly.
  • For this next test, we’ll be firing a few isotopes at your eyes to improve your night vision. If you feel a throbbing behind your eyes, that’s normal and should subside within a few hours. If you feel a pecking behind your eyes, that means a small bird got in there. We don’t know how it happens, but we’re working on it.
  • How do you feel about your feet? Like ‘em? Good, because if this next test works, you’ll have five of ‘em.
  • For this next test, you’ll be helping us solve the problem of male pattern baldness. If it works, you’re gonna start growing lush, new hair instantly. Downside: teeth hair.
  • You want to keep stealing my patents? Fine! This is war. Science war. The sweet science. You will cry into your evil black satin pillows about the day you messed with Cave Johnson! You hear me? I invented portals! I can put a doorway on the moon and another into your parking lot! Let’s see how many patents you steal when you’re floating around in outer space, you— What? Right. I know. Felt like having it on. How can… you tell? Fantastic. Good business. And if I wanted to turn it off— Good, good. Glad it was on. On purpose. And if I wanted to turn it off— Bam. Right. Good stuff, I like it. Let’s keep the switch. That’ll be all, Caroline. [click]
  • Caroline, hold my calls. I need to go see a man about a mule. What was that? Alright. Good. Mule. Gonna go see him in the bathroom. Back in ten.[1]

Conversation with GLaDOS

  • "Greetings, friend. It's Cave Johnson, CEO of Aperture Science."
  • "Down here! [pause] On the floor."
  • "That's right! It's really me. My entire living consciousness, for all eternity, inside a machine."
  • "Alone. On a dirty floor. In an abandoned room. At the bottom of a pit."
  • "My life is torture, please kill me."
  • "Hold on. Is that you, Caroline?"
  • "You were my assistant! The heart and soul of Aperture Science! You don't remember?"
  • "See, the science boys invented me a machine to house my consciousness in. But that sounded DANGEROUS, so I volunteered you to go first. Like a food taster, except with your soul! [chuckling] Guess they must've found a use for you after all. Oh! Which reminds me. I do need you both to kill me."
  • "Come on, be a sport and kill me. All you gotta do is pick me up."
  • "Plug's in the back of me. Give me a good pull, it should pop right out. "
  • "Now, before you say no, I want you to remember that I've lived a full life. Also, if this helps seal the deal, livin' in a computer this long's made me crazy. That's right: I am insane."
  • "Wait. I suppose tellin' you I'm not in my right mind could sway you to not unplugging me. Let me round back on the important parts: in a computer. Ceaseless torture. Monster in the eyes of God. So why don't you get on over here and unplug ol' Cave."
  • "Ho ho! I can feel myself shuttin' down. Man, this is excitin'."
  • "Oh! Room's gettin' dark. That's a good sign."
  • "I'm comin' for you, Caroline!"
  • "Ten–four!"
  • "Here I go! The great beyond! Valhalla, home of Hercules! I can hear them winged chariots thunderin' over now!"
  • "Thank you, Caroline."
  • "Alright! Too much jawin', not enough dyin'. Here I go! Ah."[2]


  1. Glados_scenetable_include_manual_cave.nut
  2. Glados_scenetable_include_manual_act3.nut