Ray: Personally, I like the University. They gave us money and facilities, we didn't have to produce anything. You've never been out of college. You don't know what it's like out there. I've worked in the private sector. They expect results.
Egon: There's something very important I forgot to tell you.
Venkman: What?
Egon: Don't cross the streams.
Venkman: Why?
Egon: It would be bad.
Venkman: I'm fuzzy on the whole good-bad thing. Whattya mean "bad?"
Egon: Try to imagine all life as you know it stopping instantaneously and every molecule in your body exploding at the speed of light.
Ray: Total protonic reversal....
Venkman: Right, that's bad...OK.. important safety tip. Thanks, Egon.
Venkman: This city is headed for a disaster of biblical proportions.
Mayor: What do you mean, biblical?
Ray: What he means is Old Testament, Mr. Mayor... real Wrath-of-God-type stuff. Fire and brimstone coming down from the skies.
Venkman: Rivers and seas boiling!
Egon: 40 years of darkness, earthquakes, volcanos.
Winston:The dead rising from the grave!
Venkman: Human sacrifice, dogs and cats, living together... mass hysteria!
Ray: Good evening... as a duly appointed representative of the city, county and state of New York, I order you to cease any and all supernatural activity and return forthwith to your place or origin, or to the nearest convenient parallel dimension.
Venkman: That oughta do it. Thanks very much, Ray.