Imam Abu Hamid al-Ghazali wrote the philosophy of gnostics-illumination (isyraqiyyah) in the book of Misykat al-Anwar. Not exaggerated, with the book of his work, al-Ghazali deserve entry in the list of names of the great philosophers of classical Islam. Because we know that classical Islamic philosophy there are several streams, namely philosophy of illumination flow (al-isyraqiyyah) like al-Ghazali's view in the book and Sihabuddin Suhrawardi al-maqtul (the martyr), the flow of peripatetic philosophy (masyaiyyah) like Ibn Rusdi and followers Aristotelian, philosophical school of setoicism (rawaqiyyah), and the wisdom of al-muta'aliyyah (the transcendental philosopi), a recent philosophical school that attempted to synthesize the earlier philosophical schools, such as Mulla Sadra and Mulla Hadi Syabzawari.