Alchemy: Ancient and Modern by H. Stanley Redgrove is a comprehensive exploration of the mysterious and often misunderstood art of alchemy, tracing its evolution from ancient times through the Middle Ages and into the dawn of modern science. The book delves into the origins of alchemical thought in Egypt, Greece, and the Arab world, examining the philosophical and spiritual underpinnings that shaped the practice. Redgrove discusses the legendary quest for the Philosopher's Stone, the elixir of life, and the transmutation of base metals into gold, unraveling the symbolic and literal interpretations that have fascinated seekers for centuries. The narrative provides vivid portraits of notable alchemists, such as Hermes Trismegistus, Paracelsus, and Basil Valentine, highlighting their contributions and the blend of mysticism, chemistry, and early scientific inquiry that defined their work. Redgrove also addresses the relationship between alchemy and religion, magic, and astrology, illustrating how these disciplines intersected in the minds of medieval scholars. As the book progresses, it examines the gradual transformation of alchemy into modern chemistry, emphasizing the role of experimentation and observation in this transition. Redgrove explores the persistence of alchemical ideas in contemporary spiritual and esoteric movements, suggesting that the legacy of alchemy endures in both scientific and metaphysical realms. Rich in historical detail and philosophical insight, Alchemy: Ancient and Modern offers readers a thorough understanding of alchemy's enduring allure, its impact on the development of science, and its continuing influence on the imagination. This work is an essential resource for anyone interested in the history of science, the occult, or the perennial quest for transformation and enlightenment.