Avesta of particular manuscripts. A pre-Sasanian history of the Avesta, if it had one, is in the realm of legend and myth. The oldest surviving versions of these tales are found in the ninth to 11th century texts of Zoroastrian tradition (i.e. in the so-called "Pahlavi books"). The legends run as follows: The twenty-one "nask"s ("books") of the Avesta were created by Ahura Mazda and brought by Zoroaster to his patron Vishtaspa ("Denkard" 4A, 3A). Supposedly, Vishtaspa ("Dk" 3A) or another Kayanian, Daray ("Dk" 4B), then had two copies made, one of which was stored in the treasury, and the other
Sociology of religion on individual salvation and conscience. Durkheim's definition of religion, from "Elementary Forms", is as follows: "A religion is a unified system of beliefs and practices relative to sacred things, that is to say, things set apart and forbidden – beliefs and practices which unite into one single moral community called a Church, all those who adhere to them." This is a functional definition of religion, meaning that it explains what religion "does" in social life: essentially, it unites societies. Durkheim defined religion as a clear distinction between the sacred and the profane, in effect this can be paralleled with the