Olson, a Taoist practitioner, has translated two brief but important Taoist texts, The Jade Emperor's Mind Seal Classic and The Three Treasures of Immortality . He provides a detailed commentary on the first of these, supplemented by a discussion of the historical background (Ming Dynasty and later) behind both works. The works attempt to conquer physical illness and even death through strengthening reproductive, life-sustaining, and spiritual energies (the three treasures of ching , ch'i , and shen ). According to Olson, these texts are used often in certain Beijing monasteries and have not been previously translated. Aside from use by Taoist practitioners, this book will be useful to students of Chinese religion. Recommended for academic libraries with Asian religion collections.