There are three principal schools of philosophical thought in the East: Sufism, Vedantism and Buddhism. The Sufi school of thought was that of the prophets of Beni Israel: Abraham, Moses, David, Jonah and others, Zarathushtra, Christ, Muhammad; these and other prophets came from that part of the world which includes Syria, Arabia, Persia, Egypt, and what is now Turkey and south-east Russia.