The Nature and Dynamics of Evil - Robert L. Moore

"From developmental psychology we know how an archetypal configuration can come in and take over a personality and possess it. This happens all the time in one-sided infintile personalities where the person has been hurt developmentally and the resulting ego is weak (bordeline, narcissism). The more you were hurt in your early development, the weaker your ego structure will be, and the more likely an archetypal energy will colonize you and block your individuation." - Robert L. Moore