Zoroaster Zoroaster Zoroaster (, ; "Zōroastrēs"), (Persian: زرتشت pronounced as Zartusht) also known as Zarathustra (, ; "Zaraθuštra"), Zarathushtra Spitama, or Ashu Zarathushtra, was an ancient Persian prophet, spiritual leader and ethical philosopher who taught a spiritual philosophy of self-realization and realization of the Divine. His teachings challenged the existing traditions of the Indo-Iranian religion and later developed into the religion of Mazdayasna or Zoroastrianism. He inaugurated a movement that eventually became the dominant religion in Ancient Persia. He was a native speaker of Old Avestan and lived in the eastern part of the Iranian Plateau, but his exact birthplace is
Zoroaster (i.e. reiteration of passages in works of other authors) is a complete Coptic tractate titled "Zostrianos" (after the first-person narrator) discovered in the Nag Hammadi library in 1945. A three-line cryptogram in the colophones following the 131-page treatise identify the work as "words of truth of Zostrianos. God of Truth ["logos"]. Words of Zoroaster." Invoking a "God of Truth" might seem Zoroastrian, but there is otherwise "nothing noticeably Zoroastrian" about the text and "in content, style, ethos and intention, its affinities are entirely with the congeners among the Gnostic tractates." Another work circulating under the name of "Zoroaster" was the