This book attempts to see al-Mutanabbī, a great poet of the ‘Abbasid period from the lens of humanistic psychology. An effort has been made to discover the deeper aspects of al-Mutanabbī’s personality, which constitutes an important aspect of his artistic expression. Chapters are structured accordingly for better understanding of the whole discussion. The focuses are on: Biographical sketch of al-Mutanabbī, which comprises on the historical, political, cultural background of the poet as well as his life with his patrons, the relationship between psychology and poetry, the major concept of humanistic psychology, as well as the work of Horney, Maslow and Rogers, upon which being the basis of the humanistic psychology, the Maslovian theory, to consider al-Mutanabbī as a self-actualizing person in the light of his relationship with his patron Sayf al-Dawlah, how al-Mutanabbī as a neurotic person, overcame the conflict inherent in his relationship with Kāfūr, his second patron. This book concludes that the relationship between al-Mutanabbī and Sayf al-Dawlah is the key to his great achievement as a poet, and the humanistic psychological theories thus enable us to gain a better understanding of him as a whole person. This book also proposes that humanistic psychology can open the door to a new world in the study of both Arabic literature and the life of a poet.