"A rare synthesis of scholarly precision and initiatory insight... Stands as an important addition to the history of Western occultism and fills a long-standing gap in serious historical treatment of this current... Reveals how inner work, initiatory drama, and metaphysical vision shaped the Western path toward reintegration. " -Mat Auryn, bestselling author of Psychic Witch, Mastering Witchcraft, and The Psychic Art of TarotEighteenth- and nineteenth-century France incubated a remarkably coherent esoteric Christianity. Neoplatonism, Hermeticism, Rosicrucianism, Freemasonry, Christian Kabbalah, and a revived Gnostic liturgy converged around the doctrine of réintégration-the return of all beings to Divine Unity in the Logos. Moving from Martinès de Pasqually's theurgy and Saint-Martin's interior path to Lévi's symbolic synthesis, Papus's initiatory codification, and Doinel's Eucharistic vision, this book shows how a "Christian non-duality" took public form in lodges, journals, and churches. Far from a syncretic curiosity, the French tradition offers a rigorous, historically grounded account of unity that speaks fluently with Buddhism, Vedānta, and Taoism while remaining unmistakably Christian.