Ok, I do vaguely remember Seth talking about the power of myths from many of his earlier books. There is also something I came across recently where Buddhist monks create a Tulpa ( Tulpa is a concept in mysticism and the paranormal of a being or object which is created). Created through a group of people focusing on and with the intention of creating an entity. I find that an interesting bit of spiritual lore.
So, if we do indeed have a dark force, we created it.
I personally do not believe in “evil or the devil or demons” as being anything more than energy that people have created or embodied: lost souls, confused about or with, anger, pain and power.
There is a Seth writing I am reading now, “The Magical Approach,” where he is talking about getting in touch with the palpability of the creative energy of “thought.” And I would agree, that we as a modern people have lost touch with the power of mysticism. Perhaps mysticism could be looked upon, more of a tool than that of an ancient concept.
Something about the power of the midnight sky and sitting around a campfire out in the wilderness that can drum up the energy of our own mysticism and magic.
Although I think you are off on a different tangent than I am right now.