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