The teachings with the Course are non-dualistic teachings. In case you return into ancient China or back again into India, you would've heard about Advaita Vedanta. Advaita actually implies “not two,” and that is a strategy for talking about the fact that there is a oneness which connects us all. https://www.youtube.com/channel/UCTleG6-484F7WHZD0hAjRRw