2000 decades back, we didn’t have Sigmund Freud. We didn’t have all these teachings about the unconscious guilt, protection mechanisms, the ego, and so forth. A Course in Miracles employs the teachings of psychology, the teachings and terminology of schooling, and What's more, it takes advantage of Christian terminology. https://www.youtube.com/channel/UCTleG6-484F7WHZD0hAjRRw