Ancient Iranian religion was strongly connected. Beginning in the early 10th-century BC, the ancient Iranian religion was gradually displaced by Zoroastrianism, which contains many essential aspects of its predecessor. The sources on ancient Iranian religion, though limited, consist of textual and material sources. The textual sources are both Iranian and non-Iranian. An important Iranian source is the Avesta, which are Zoroastrian sacred scriptures made in the Avestan. This is considered the principal source of knowledge on ancient Iranian religions. It is a collection of several texts that seems to have been over a large span of time by a variety of authors. These
Sociology of Religion (book) Sociology of Religion (book) Sociology of Religion is a 1920 book by Max Weber, a German economist and sociologist. The original edition was in German. Max Weber studied the effects of religious action and inaction. He views religion by simply categorized different religions in order to fully understand religion's subjective meaning to the individual ("Verstehen"). By viewing religion strictly in the scientific sense, Weber was striving for objectivity, attempting to ignore value judgments, and to understand religion as those human responses that give meaning to the inescapable problems of existence, such as birth, death, illness, aging, injustice, tragedy, and suffering.