Jeffery Raff illustrates the spiritual nature of Jungian psychology and the debt it owes to the tradition of esoteric religion. Unlike other books on Jung and alchemy which contain a psychological interpretation of alchemical material, this work uses alchemy to understand the three cornerstones of Jungian spirituality -- the self, the transcendent function, and active imagination. Through the interpretation of alchemical imagery, Raff explains the nature of these three concepts and illustrates how together they form a new model of contemporary Western spirituality. This book is also unique in selecting alchemical texts for analysis that are relatively unknown and which, for the most part, have never been interpreted. In addition, he presents two new concepts -- the ally and the psychoid realm. Using these ideas, and the new understanding that they offer, it is possible to apply alchemical imagery to transpsychic experience; that is, to a world of spirits which may not be reduced to psychological concepts. By including this realm in the study of alchemy and Jungian thought, it is possible to gain insights into the nature of visionary and ecstatic experiences that form part of the path of individuation -- the road to completion.