This book is written with the goal to highlight the contributions of eminent Muslim scholars, philosophers and physicians to the field of mental health, psychotherapy and clinical psychology in general. Among these eminent Muslim scholars are: Mohammad Bin Zakariya Al-Razi, Ibn-Sina, Al-Ghazali, Al-Arabi, Rumi, Maulana Ashraf Ali Thanvi, Al-Khuze, Al-Mawsili, Ibn-Rushd. The author has given historical evolution of clinical psychology during the Muslim Empire from Iran to Spain which was predominantly influenced by the Islamic philosophy about human nature,growth & development.Furthermore, an attempt has been made to compare the similarities between the western humanistic school of thought and modern psycho-therapeutic interventions and those which were introduced by the Muslim physicians, philosophers and scholars during the Dark Age of Europe and Downfall of Roman Empire. It is hoped that this book would be of immense value for the scholars, researchers, students of psychology, philosophy, sociology, anthropology and psychiatry in promoting their awareness about evolution of clinical psychology in the Muslim world. Indeed, the flowers of tomorrow are in the seeds of past!