The Early Sessions, Book 8

"This is not the Cayce material, with information seemingly coming from some vast storehouse of knowledge. In those terms no such storehouse exists. Knowledge does not exist independently of the one who knows. Someone gave Cayce the material. It did not come out of thin air. It came from an excellent source, a pyramid gestalt personality, with definite characteristics, but the alien nature of the personality was too startling to Cayce, and he could not perceive it."

Session 417, Page 317