So be good, for goodness sake! Whoa... somebody's coming!

Dr. Egon Spengler:
The structure of this roof cap is exactly like the kind of telemetry tracker that NASA uses to identify dead pulsars in deep space.Dr. Raymond Stantz:Cold-riveted girders with cores of pure selenium.Dr. Peter Venkman: Everybody getting this so far?Dr. Peter Venkman:So what? I guess they just don't make them like they used to.Dr. Raymond Stantz: No! Nobody *ever* made them like this! I mean, the architect was either a certified genius, or an authentic wacko!Dr. Peter Venkman:Ray... for a moment, pretend that I don't know anything about metallurgy, engineering or physics, and just tell me what the hell is going on.Dr. Raymond Stantz:You never studied. The whole building is a huge, superconductive antenna that was designed and built expressly for the purpose of pulling in and concentrating spiritual turbulence. Your girlfriend lives in the corner penthouse of spook central.Dr. Peter Venkman:She's not my girlfriend. I find her interesting because she's a client and sleeps above her covers. *Four feet* above her covers. She barks, she drools, she claws...Dr. Egon Spengler:It's not the girl, Peter, it's the building. Something terrible is about to enter our world, and this building is obviously the door. The architect's name was Ivo Shandor. I found it in Tobin's Spirit Guide. He was also a doctor. Performed a lot of unnecessary surgery. And then, in 1920, he started a secret society...Dr. Peter Venkman:Let me guess: Gozer worshipers.Dr. Egon Spengler:Right.Dr. Peter Venkman: No studying.Dr. Egon Spengler:After the First World War, Shandor decided that society was too sick to survive.Dr. Egon Spengler:And He wasn't alone. He had close to a thousand followers when he died. They conducted rituals up on the roof, bizarre rituals intended to bring about the end of the world. And now it looks like it may actually happen.Dr. Peter Venkman: So be good, for goodness sake! Whoa... somebody's coming!