From the book cover: Belief in evil supernatural beings who have the power to menance and prey on humans existed in all primitive societies and was vigorously alvie in the ancient world in which the modern west has it's roots-in Egypt, Mesopotamia, Greece, Rome, and through out the pre-Christian Europe. These beliefs continue to florish in medieval Europe, mingling with the influencing Christianity, and remains alvie and well today and affects ourlive more than we understand or care to admit. The Powers of Evil is a comprehensive study of those beliefs. We may doubt thereality of such beings as vampires, furies,or Satan, we cabbit doubt the psychological reality of the fear and terror these powers of evil inspire. The author reminds us, a study of these powers "may or may not reveal the world outside us, bu it does illuminate many unexpeced facets of ourselves.