I have never read horror, nor do I consider The Exorcist to be such, but rather as a suspenseful supernatural detective story, or paranormal police procedural.
William Peter BlattyWe mourn the blossoms of May because they are to whither; but we know that May is one day to have its revenge upon November, by the revolution of that solemn circle which never stops - which teaches us in our height of hope, ever to be sober, and in our depth of desolation, never to despair.
William Peter BlattyIn order for life to have appeared spontaneously on Earth, there first had to be hundreds of millions of protein molecules of the Ninth Configuration. But, given the size of the planet Earth, do you know how long it would take for just one of these protein molecules to appear by chance? Roughly 10 to the 243rd power, billions of years; and I find that far, far more fantastic than simply believing in a god.
William Peter Blatty