Zoroaster lower right corner. The prophet is holding a star-studded globe. 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
Zoroaster all claimed that Zoroaster originated from "their" homelands, some of which then decided that Zoroaster must then have then been buried in their regions or composed his Gathas there or preached there. Also Arabic sources of the same period and the same region of historical Persia consider Azerbaijan as the birthplace of Zarathustra. By the late 20th century, most scholars had settled on an origin in eastern Greater Iran. Gnoli proposed Sistan, Baluchistan (though in a much wider scope than the present-day province) as the homeland of Zoroastrianism; Frye voted for Bactria and Chorasmia; Khlopin suggests the Tedzen Delta in