The book begins with compelling introductions to depth psychology, alchemy, and Gaia theory—the science of seeing the Earth as an intelligent, self-regulating system, a theory pioneered by the author’s mentor James Lovelock. Harding then explores how alchemy, as understood through the depth psychology of C. G. Jung, offers readers powerful methods of reuniting rationality and intuition, science and soul. He examines the integration of important alchemical engravings, including those from L’Azoth des Philosophes and the Rosarium Philosophorum, with Gaian science. He shows how the seven key alchemical operations in the Azoth image can help readers develop deeply transformative experiences and insights into their interconnectedness with Gaia. He then looks at how the four components of the living Earth—biosphere, atmosphere, hydrosphere, and lithosphere—mesh not only with the four elements of alchemical theory but also with the four functions of consciousness from depth psychology.