The teachings on the Course are non-dualistic teachings. In case you go back into ancient China or back into India, you might have heard of Advaita Vedanta. Advaita really indicates “not two,” and that is a method of talking about the fact that there's a oneness which connects us all. https://www.youtube.com/channel/UCTleG6-484F7WHZD0hAjRRw