— You know, you don't act like a scientist.
— They're usually pretty stiff.
— You're more like a game-show host.
Twenty-four hours a day, seven days a week. No job is too big. No fee is too big.
— Whatever it is, it's gotta get by us. Right. Go get her, Ray!
— Gozer the Gozerian? Good evening. As a duly designated representative of the city county and state of New York I order you to cease all supernatural activity and return to your place of origin or to the nearest convenient parallel dimension.
— That ought to do it. Thanks very much, Ray.
— But there are some things we do... standard procedures in a case like this, which often bring us results.
— I could check out the structural details in the building. Maybe the building has a history of psychic turbulence.
— Right. Good idea.
— I could search «Zuul» in the usual literature. Spates Catalog.
— I'll take Miss Barrett back to her apartment and check her out. I'll go check out Miss Barrett's apartment. O'kay?
— Dr. Venkman... would you please tell the court why it is that you and your co-defendants took it upon yourselves to dig a very big hole in the middle of First Avenue.
— Well, there's so many holes in First Avenue we really didn't think anyone would notice.
— Dana, did you see some shirts here in the floor-bed area?
— Yeah, I put them in the hamper.
— I have a hamper?!
— Yeah, it's in the bathroom.
— Neat. Will you tell me next time you're gonna do that, though, please?
— Well, I thought they were dirty.
— I have more than two grades of laundry, okay?
— There's not just clean and dirty. There are many subtle levels, okay?
— You hang this outside the window for 20 minutes, it's perfectly fine.
— There's something very important. I forgot to tell you.
— What?
— Don't cross the streams.
— Why?
— It would be bad.
— I'm fuzzy on the whole good/bad thing. What do you mean, «bad»?
— Imagine all life as you know it stopping instantaneously and every molecule... in your body exploding at the speed of light.
— Total protonic reversal.
— Right, that's bad. Okay.
— What are you supposed to be, some kind of a cosmonaut?
— No, we're exterminators. Somebody saw a cockroach up on 12th.
— That's gotta be some cockroach.
— Bite your head off, man.
— Choose. Choose the form of the Destructor.
<...>
— It's the Stay Puft, Marshmallow Man.
— There's something you don't see every day.
— I tried to think of a harmless thing. Something I loved from my childhood. Something that could never, ever possibly destroy us. Mr. Stay Puft.
— Nice thinking, Ray.