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