4. THE ANCIENT RELIGION OF PERSIA.--The ancient literature of Persia is mainly the exposition of its religion. Persia, Media, and Bactria acknowledged as their first religious prophet Honover, or Hom, symbolized in the star Sirius, and himself the symbol of the first eternal word, and of the tree of knowledge. In the numberless astronomical and mystic personifications under which Hom was represented, his individuality was lost, and little is known of his history or of his doctrines. It appears, however, that he was the founder of the magi (priests), the conservators and teachers of his doctrine, who formed a particular order, like that of the Levites of Israel and of the Chaldeans of Assyria. They did not constitute a hereditary caste like the Brahmins of India, but they were chosen from among the people. They claimed to foretell future events. They worshiped fire and the stars, and believed in two principles of good and evil, of which light and darkness were the symbols. Zoroaster, one of these magi, who probably lived in the eighth century B.C., undertook to elevate and reform this religion, which had then fallen from its primitive purity. Availing himself of the doctrines of the Chaldeans and of the Hebrews, Zoroaster, endowed by nature with extraordinary powers, sustained by popular enthusiasm, and aided by the favor of powerful princes, extended his reform throughout the country, and founded a new religion on the ancient worship. According to this religion the two great principles of the world were represented by Ormuzd and Ahriman, both born from eternity, and both contending for the dominion of the world. Ormuzd, the principle of good, is represented by light, and Ahriman, the principle of evil, by darkness. Light, then, being the body or symbol of Ormuzd, is worshiped in the sun and stars, in fire, and wherever it is found. Men are either the servants of Ormuzd, through virtue and wisdom, or the slaves of Ahriman, through folly and vice. Zoroaster explained the history of the world as the long contest of these two principles, which was to close with the conquest of Ormuzd over Ahriman. The moral code of Zoroaster is pure and elevated. It aims to assimilate the character of man to light, to dissipate the darkness of ignorance; it acknowledges Ormuzd as the ruler of the universe; it seeks to extend the triumph of virtue over the material and spiritual world. The religion of Zoroaster prevailed for many centuries in Persia. The Greeks adopted some of its ideas into their philosophy, and through the schools of the Gnostics and Neo-Platonists, its influence extended over Europe. After the conquest of Persia by the Mohammedans, the Fire- worshipers were driven to the deserts of Kerman, or took refuge in India, where, under the name of Parsees or Guebers, they still keep alive the sacred fire, and preserve the code of Zoroaster.