The mystical initiation in theory and practice. Waltharius, along with Heinrich Tränker, was one of the last great sages of the past Age of Pisces and stood in the tradition of the true Rosicrucians. He possessed a hermetic initiation that is now only achieved by very few people. The books and writings of Waltharius are among the most sought-after esoteric literature. His books are a treasure trove of esoteric knowledge and describe the practice of hermetic training and initiation in clear language. This book points the seriously seeking individual towards their immortal self and the unio mystica, the union with God. Topics covered: Mysticism as a concept and path, mysticism as life fulfillment and goal, mystical paths (exercises and practices that develop the subtle body), and passive waiting.