This book is a fascinating exploration into the world of shamanism and the use of psychotropic plants in spiritual awakening. The author, an anthropologist, shares his experiences under the tutelage of Don Juan, a Yaqui Indian sorcerer from Mexico. The narrative is a detailed chronicle of his apprenticeship, where he learns about the ancient spiritual practices of the Yaqui people. Don Juan introduces him to the use of peyote and other hallucinogenic plants, guiding him through a series of mystical experiences that challenge his scientific worldview. The book delves into the concepts of perception, reality, and the nature of consciousness, offering a unique perspective on the human experience. It is a thought-provoking journey that blurs the lines between science and spirituality, reality and illusion, and life and death. The teachings of Don Juan provide a profound insight into the power of the human mind and the potential for spiritual growth.