Dr. Peter Venkman: This city is headed for a disaster of biblical proportions.
Mayor: What do you mean, "biblical"?
Dr. Raymond Stantz: What he means is Old Testament, Mr. Mayor, real wrath-of-God type stuff. Fire and brimstone coming down from the sky. Rivers and seas boiling.
Dr. Egon Spengler: Forty years of darkness. Earthquakes, volcanoes...
Winston Zeddemore: The dead rising from the grave.
Dr. Peter Venkman: Human sacrifice, dogs and cats living together - mass hysteria.
Dr. Peter Venkman: She's not my girlfriend. And I find her interesting because she likes to sleep above her covers. Four feet above her covers.
Winston Zeddemore: Ray, when someone asks you if you're a god, you say "yes"!
Dr. Peter Venkman: We came, we saw, we kicked its ass!
Man at Elevator: What are you supposed to be, some kind of a cosmonaut?
Dr. Peter Venkman: No, we're exterminators. Someone saw a cockroach up on twelve.
Man at Elevator: That's gotta be some cockroach.
Dr. Peter Venkman: Bite your head off, man.
Dr. Peter Venkman: Normally, you don't see that kind of behavior in major appliance.
Dr. Peter Venkman: ...the flowers are still standing!.
Dana Barrett: That's the bedroom... But nothing ever happened in there.
Dr. Peter Venkman: What a crime...
Dr. Egon Spengler: There's something very important I forgot to tell you.
Dr. Peter Venkman: What?
Dr. Egon Spengler: Don't cross the streams.
Dr. Peter Venkman: Why?
Dr. Egon Spengler: It would be bad.
Dr. Peter Venkman: I'm fuzzy on the whole "good/bad" thing here! What do you mean "bad"?
Dr. Egon Spengler: Try to imagine all life as you know it stopping instantaneously and every molecule in your body exploding at the speed of light.
Dr. Ray Stanz: Total protonic reversal!
Dr. Peter Venkman: That's bad. Okay. Alright, important safety tip, thanks Egon.
Winston Zeddemore: Hey, wait a minute. Hey. Hey. Hey. Hey. Hey. Hold it. Now, are we actually gonna go before a federal judge, and tell him that some moldy Babylonian God is going to drop in on Central Park West, and start tearing up the city?
Dr. Egon Spengler: Sumerian, not Babylonian.
Dr. Peter Venkman: Yeah. Big difference.
Winston Zeddemore: No offense, guys, but I've gotta get my own lawyer.
Dana Barrett: You know, you don't act like a scientist.
Dr. Peter Venkman: They're usually pretty stiff.
Dana Barrett: You're more like a game show host.
Peter: Back off man, I'm a scientist.
Ray: Hey, Does this pole still work?
Egon: That would have worked if you hadn't stopped me.
Winston: That's a big Twinkie.
Peter: I make it a rule never to get involved with possessed people. [pauses] Actually, it's more like a guideline than a rule...
Dana: There is no Dana... there is only ZUUL!
Peter: Oh ZUULie, you little monkey....
Louis: Gozer the Traveller - he will come in one of the pre-chosen forms. During the rectification of the Valdranaii, the traveller came as a large and moving Torr! Then, during the third reconciliation of the last of the Meketrex supplicants they chose a new form for him - that of a giant Slorr! Many Shubs and Zuuls knew what it was to be roasted in the depths of the Slorr that day, I can tell you!