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 named in honor of the Zoroastrian patron, indicating possible Zoroastrian faith by Arsames. Classical scholarship in the 6th to 4th century BCE believed he existed six thousand years before Xerxes I invasion of Greece in 480 BCE (Xanthus, Eudoxus, Aristotle, Hermippus), which is a possible misunderstanding of the Zoroastrian four cycles of 3000 years i.e. 12,000 years. This belief is recorded by Diogenes Laërtius, and variant readings could place it six hundred years before Xerxes I, somewhere before 1000 BCE. However, Diogenes also mentions Hermodorus's belief that Zoroaster lived five thousand years before the Trojan War, which would mean he