Although this be not destitute of religious observances, yet we find scarce any painful austerity recommended. The twenty-fifth gate of Zoroaster contains the remarkable precept: “Know that in thy faith there is no fasting except that of avoiding sin: in which sense thou must fast the whole year.”[122] The ancient Mahabadian religion, although adulterated before, during, and after Zoroaster’s life, seems to have never lost its grave character and solemnity. In the Zand-books known to us, no trace of temples, altars, or religious symbols exist. Herodotus knew of none; the fire-places were upon a desert place, or upon mountains; the fire upon the ground. Upon the Persian monuments which time has spared, upon the walls of the thousand-pillared palace of Isfahan, and upon those of the Royal tombs we see no idols, but priests and kings, performing the sacrifice of fire before their _fervers_, “ideals of virtue and sanctity,” and other actions rather of a political than religious character. The pyræa, round and concave, represented the vault of heaven. Nevertheles other accounts permit us to believe, that, by association with other nations; most likely by the introduction of sculpture, architecture, and painting; and, as the Dabistán expressly says, by the use of symbolical language: a superstitious worship of sacred places and symbolic images gained a great ascendancy. This religion prevailed during the times of the Kayanian kings from Gushtasp to Dara the Second, during more than two centuries. After the conquest of Persia by Alexander, a political and religious revolution took place in this country, and extended to Greece, where, according to the commentary of the Desátir, the creed of the _Gushaspians_ was introduced. This is declared to be a medium between the _Illuminated_ and the _Rationalists_, perhaps the same which the Dabistán calls the faith of the _Beh-dinians_, “professors of the better religion.” So much is avowed by Philo, Plinius, and others――and we have reason to lay stress upon this avowal――that at one time the so called barbarians were reckoned to be more wise and virtuous than the Greeks. During the Ashkanian dynasty (from the third century B. C. to the end of the second after our era), the people conformed to the _Kah-zand_, that is, yielded to the superstition, which the figurative language was apt to suggest. Ardeshir, the first Sassanian, in the beginning of the third century A. D.; endeavored to re-establish the ancient religion; but, after his reign of forty years, the Kah-zand took and kept the ascendancy, until the Persian empire fell before the overwhelming power of the Muhammedans. The Mah-zand was lost during the domination of the intolerant invaders, Greeks, Arabs, and Turks; the Kah-zand still remains in some of its parts, whilst many others were lost in the successive disorders of the state.