The twelfth-century Sufi Shihabuddun Yahya Al-Suhrawardi (1155-11 91 A.D., 549-587 A.H.) was the founder of the Illuminationist, or Ishraqi, school, a philosophy of “light” or intellectual intuition, influenced by Platonism, Hermeticism, and, especially, the teachings of Persian Sufi masters.