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