To piggyback: If anyone is interested in more of this line of thinking, i.e., self-enquiry, nondualism, etc, there is a wonderful series of introductory lectures on vedantist-thought by Swami Sarvapriyananda[1]. A line of thinking which, if I may add, influenced literary figures like Emerson, Tolstoy, and Yeats[2]. Above all, it reminds me of an idea I recently came across from a blog I follow: "A stronger link needs to be made between "liberation" in the revolutionary, social/political, decolonial sense, and "liberation" in the mystical, ego-dissolving, soteriological sense."

1. https://www.youtube.com/playlist?list=PLBh-iYJ1Q_hQSUXzV7GtT...

2. https://swarajyamag.com/culture/ten-writers-and-their-intera...