Burke Dennings: Shall we summon the writer? He’s in Paris.
Chris MacNeil: Hiding?
Burke Dennings: Fucking.
Regan MacNeil: Captain Howdy, do you think my mom’s pretty? Captain Howdy? Captain Howdy, that isn’t very nice!
Chris MacNeil: Well, maybe he’s sleeping.
Chris MacNeil: Oh no, that was no spasm. I got on the bed. The whole bed was thumping and rising off the floor and shaking. The whole thing, with me on it!
Dr. Klein: Mrs. MacNeil, the problem with your daughter is not her bed; it’s her brain.
Dr. Taney: Pathological states can induce abnormal strength. Accelerated motor performance. Now, for example, say a 90 pound woman sees her child pinned under the wheel of a truck. Runs out and lifts the wheels a half a foot up off the ground – you’ve heard the story – same thing here. Same principle, I mean.
Chris MacNeil: So what’s wrong with her?
Dr. Klein: We still think the temporal lobe.
Chris MacNeil: Oh what are you talking about, for Chrissakes? Did you see her or not? She’s acting like she’s fucking out of her mind, psychotic, like a… split personality or…
Dr. Taney: There haven’t been more than a hundred authentic cases of so-called split personality, Mrs. MacNeil. Now I know the temptation is to leap to psychiatry. But any reasonable psychiatrist would exhaust the somatic possibilities first.
Chris MacNeil: So, what’s next?
Dr. Taney: A pneumoencephalogram, I would think. Pin down that lesion. It will involve another spinal.
Chris MacNeil: Oh, Christ.
Dr. Taney: What we missed in the EEG and the arteriograms could conceivably turn up there. At least, it would eliminate certain other possibilities.
Dr. Barringer, Clinic Director: There is one outside chance for a cure. I think of it as shock treatment – as I said, it’s a very outside chance… Have you ever heard of exorcism? Well, it’s a stylized ritual in which the rabbi or the priest try to drive out the so-called invading spirit. It’s been pretty much discarded these days except by the Catholics who keep it in the closet as a sort of an embarrassment, but uh, it has worked. In fact, although not for the reasons they think, of course. It’s purely a force of suggestion. The victim’s belief in possession is what helped cause it, so in that same way, a belief in the power of exorcism can make it disappear.
Chris MacNeil: You’re telling me that I should take my daughter to a witch doctor? Is that it?
Demon: I’m not Regan.
Father Damien Karras: Well, then let’s introduce ourselves. I’m Damien Karras.
Demon: And I’m the Devil. Now kindly undo these straps.
Father Damien Karras: If you’re the Devil, why not make the straps disappear?
Demon: That’s much too vulgar a display of power, Karras.
Chris MacNeil: You show me Regan’s double, same face, same voice, everything. And I’d know it wasn’t Regan. I’d know in my gut. And I’m telling you that ‘thing’ upstairs isn’t my daughter. Now, I want you to tell me that you know for a fact that there’s nothing wrong with my daughter, except in her mind. You tell me for a fact that an exorcism wouldn’t do any good. You tell me that!
Father Merrin: I cast you out! Unclean spirit!
Demon: Shove it up your ass, you faggot!
Father Merrin: In the Name of our Lord Jesus Christ! It is he who commands you! It is he who flung you from the gates of Heaven to the depths of Hell!
Demon: Fuck him!
Father Merrin: Be gone…
Demon: Fuck him, Karras! Fuck him!
Father Merrin: …from this creature of God! Be gone! In the Name of the Father, the Son, and the Holy Spirit!
Demon: Your mother sucks cocks in Hell, Karras, you faithless slime.
Father Merrin: Especially important is the warning to avoid conversations with the demon. We may ask what is relevant but anything beyond that is dangerous. He is a liar. The demon is a liar. He will lie to confuse us. But he will also mix lies with the truth to attack us. The attack is psychological, Damien, and powerful. So don’t listen to him. Remember that – do not listen.