This book introduces the readers to the fascinating world of Mulla Sadra's thought, one of the most important figures of the later Islamic intellectual tradition. Sadra's 'Transcendent Wisdom' is based on the fundamental insight that all things derive their reality and truth from the all-inclusive reality of existence. Along the 'four journeys' of his philosophical quest, Sadra produces a world-picture that is a reflection of the infinite symphony of existence and its modalities. His penetrating deliberations on the human state and spiritual anthropology provide one of the most profound statements of the underlying unity between humans, the universe and the Divine. The book takes the reader through the elaborate and rich world of Sadra's intellectual journey and shows its relevance for today's philosophical issues in the Islamic and Western worlds.