Non-Duality has its roots in Advaita Vedanta, which is a school in Hindu philosophy. The core idea is that your true nature and the consciousness pervading the universe are non-dual and thus identical. Indeed, according to this view, this all-pervading aliveness is all there is. Everything else is a transient and illusory reflection of this ultimate reality. Ah, and Samji is what my Indian friends call me. Hence the hashtag #samjinonduality