Come to a comprehensive idea of the metaphysics of A Course in Miracles by a mix of audio/video sources and Q&A dialogues with David Hoffmeister. Robert T. Carroll wrote the teachings are certainly not primary but are culled from "a variety of sources, east, and west". He adds that it's https://podcasts.apple.com/us/podcast/a-courseinmiracles-acim-podcast/id1456963067