One of the great works of mystical religious literature, the Kimiya-i-Sa'adaat strove to bring man closer to understanding God by helping him understand himself. These excerpts from that work, by a strikingly original thinker on Islam who lived and wrote in the 11th century, were first published in 1910. They serve as a potent reminder of how powerful an influence Al-Ghazzali had upon religious philosophers of the Middle Ages, both Christian and Islamic. With its wise and warmly humanistic outlook, this little book may well foster a new measure of understanding in the current philosophical battle between the religious traditions of East and West. Also available from Cosimo Classics: Field's Shadows Cast Before and Jewish Legends of the Middle Ages. ABU HAMED MUHAMMAD IBN MUHAMMAD AL-GHAZZALI (1058-1111)was a Persian Islamic philosopher, theologian, psychologist, and mystic, known today as one of the most famous Sunni scholars in history, sometimes cited as next-in-importance only to Muhammad. Born in Tus, Al-Ghazzali was a pioneer of methodic doubt; his work The Incoherence of Philosophers shifted early Islamic philosophy from metaphysics to the theory of occasionalism, an Islamic doctrine that states cause-and-effect is controlled by God. He also succeeded in bringing orthodox Islam in contact with Sufism. The author of