This book is another Abhedananda volume dedicated to an aspect of Vedanta philosophy under the broader banner of Hinduism. It's intriguing, and is partly in the form of dialogue involving Indra.
The entire purpose is a philosophical expose on the concept of self- not the rudimentary physical self which passes away, but rather a higher variant of the self, posited not to be some spirit subjugate to an external deity, nor a will-less component of some divine totality, but something akin to and yet different from both, to be known, but not entirely via reason.
83 pages.