The teachings with the Course are non-dualistic teachings. If you go back into ancient China or again into India, you would've heard about Advaita Vedanta. Advaita in fact suggests “not two,” and that's a way of discussing the fact that there is a oneness which connects us all. The phrase https://www.youtube.com/channel/UCTleG6-484F7WHZD0hAjRRw