John Levy was an Englishman who spent many years in India with his guru, Krishna Menon, and brought his knowledge of Advaita Vedanta to the west in an accessible form. In this book, he makes the classic argument against subject-object duality and determines that the true Self cannot be known (as to know it would be to objectify it). Oddly enough, this is a liberating discovery, as we see that our essence cannot be altered by anything we do or anything that happens to us. This frees us to tackle anything, to jump in to the stream of life and enjoy the experience, because at the core of our existence is an untouchable reality.