From Miguel Conner's 6-27-16 blog post "Philip K. Dick's Own Definition of Gnosticism":
no secret knowledge that one of this site’s inspirations in all its
heresy is Philip K. Dick. More than a decade ago, while plowing through
my first copy of the Nag Hammadi library, I was affected but puzzled by
the contraband message of the ancient Gnostics.
"Then I readValis. Then I saw through a glass darkly no more when it came to the Gnostic beliefs.
"Sure, it’s also no secret knowledge that Dick employed (and weaponized) Gnostic themes in many of his works beyondValis—that
he was aware of Gnosticism long before the first edition of the Nag
Hammadi library was published in 1978. In fact, Dick provided his own
“listicle” on the what defines Gnosticism...."