The teachings of the Course are non-dualistic teachings. In the event you go back into ancient China or back into India, you would have heard of Advaita Vedanta. Advaita basically signifies “not two,” and that's a means of discussing the fact that there is a oneness which connects us all. https://www.youtube.com/channel/UCTleG6-484F7WHZD0hAjRRw