In this exceptional work, the reader is transported into the depths of the mind of Sigmund Freud, the man who uncovered the secrets of the unconscious and changed the face of psychology forever, through a journey through the history of his ideas that made dreams decipherable texts and lapses keys to understanding the human psyche. From the founding of psychoanalysis and his conflicts with the scientific community, to his revolutionary theories on infantile sexuality and the Oedipus complex, through his deconstruction of the myths of culture and religion in "Totem and Taboo," the book offers a comprehensive document of Freud's turbulent life and his unforgettable legacy. You will discover how he transformed academic rejection of his ideas into a driving force for establishing a school of thought that changed the world, and how concepts such as "repression" and "libido" became tools for deciphering human behavior. In an elegant and carefully translated translation, the original text is supplemented by documentary appendices and organized lists that facilitate the reader's chronological tracing of Freud's ideas and illuminate the secret laboratory of a man who lived between genius and controversy, between reverence and criticism, leaving behind an intellectual legacy that continues to arouse admiration and inspire writers, scientists, and thinkers. An indispensable book for specialists and an essential key for anyone exploring Freud's fascinating world.