"I do keep wishing— oh, ever so wistfully and— let’s face it, hopelessly— that 'The Exorcist' be remembered at this time of the year for being not about shivers but rather about souls, for then it would indeed be in the real and true spirit of Halloween, which is short for the eve of All Hallows or All Saints Day."
— William Peter Blatty in an article dated October 28, 2011.
See also The Soul's Code, a Log24 post of October 28.