Abu Al Hassan Al Ameri is one of the greatest Islamist philosophers. He has been noticeably neglected for his peculiar style. Four Philosophical Letters is Al Ameri’s distinguished book which forwarded and thoroughly verified by Saeed Al Ghanmi. The book, obviously, belongs to a school that is largely different from the Greek mainstream approach, rendering it to be influential contribution in the field. It traces Almeri’s life and his philosophical perspectives. It also sheds light on the main characteristics of Al Kindi School and Abi Zaid Al Balkhi to which Alemri can be sided with.