One more: The Flight of the Alone to the Alone, by Osho. It is about the Kaivalya Upanishad: https://en.m.wikipedia.org/wiki/Kaivalya_Upanishad https://en.m.

One more: The Flight of the Alone to the Alone, by Osho. It is about the Kaivalya Upanishad: https://en.m.wikipedia.org/wiki/Kaivalya_Upanishad https://en.m.wikipedia.org/wiki/Kaivalya_Upanishad https://www.google.com/search?q=flight+of+the+alone+to+the+alone+osho https://www.google.com/search?q=flight+of+the+alone+to+the+a... https://www.sannyas.wiki/index.php?title=Flight_of_the_Alone_to_the_Alone_(discourses) https://www.sannyas.wiki/index.php?title=Flight_of_the_Alone... I have read that book. It is good.