This book is at first sight a selection of reviews spanning many years, including some fundamental well-known works and some rare gems of world religions, their spirituality and mysticism, touching on theology, ecology and art; as such, it is useful and interesting in itself, not least because the selection of titles under review follows rigorous criteria. But this collection is also much more than its description implies, for the objective and informative aspect of every chapter is inseparable from an intimate aspect, a recurrent invitation to tread the Path within every path. It is written from first-hand acquaintance and from study, but also from passion and certainty. The concrete and diverse examples shed light on the key to solve the religious puzzle of our times: that is, they delineate an integral framework, that of Perennial Wisdom, the Sophia Perennis as understood in the Traditionalist School, which allows both for religious diversity and for religious unity. The voices of tradition are all, and have to be, different, and yet they are of a compelling unanimity on the essentials. Samuel Bendeck Sotillos draws our attention generously to these voices and this One Voice.