“She watched as a beer truck lumbered by with a clink of quivering warm, wet promises.”

“Your mother's in here, Karras. Would you like to leave a message? I'll see that she gets it.”

“But I'll tell you something, Father; you give me Regan's identical twin: same face, same voice, same smell, same everything down to the way she dots her i's, and still I'd know in a second that it wasn't really her! I'd know it! I'd know it in my gut and I'm telling you I know that thing upstairs is not my daughter! I know it! I know!”

“Regan had the physical syndrome of possession. That much he knew. Of that he had no doubt. For in case after case, irrespective of geography or period of history, the symptoms of possession were substantially constant. Some Regan had not evidenced as yet: stigmata; the desire for repugnant foods; the insensitivity to pain; the frequent loud and irrepressible hiccuping. But the others she had manifest clearly: the involuntary motor excitement; foul breath; furred tongue; the wasting away of the frame; the distended stomach; the irritations of the skin and mucous membrane. And most significantly present were the basic symptoms of the hard core of cases which Oesterreich had characterized as genuine possession: the striking change in the voice and the features, plus the manifestation of a new personality.”

“Perhaps evil is the crucible of goodness... and perhaps even Satan - Satan, in spite of himself - somehow serves to work out the will of God.”

“The terror drifted over georgetown like the sun over a blind mans eyes”

“Her shoes were comfortable. They reflected her hope for the evening.”