From a recent interview in The Wrap, director William Friedkin (THE EXORCIST, THE FRENCH CONNECTION, TO LIVE AND LIE IN L.A.):
Do you think someone who was a religious skeptic could have directed “The Exorcist”?
I think somebody who was an avowed atheist should not have directed the film. My personal beliefs are defined as agnostic. I’m someone who believes that the power of God and the soul are unknowable, but that anybody who says there is no God is not being honest about the mystery of fate. I was raised in the Jewish faith, but I strongly believe in the teachings of Jesus.
The director's new book, a memoir: "The Friedkin Connection."