Zarathushtra, also known as Zoroaster, was an ancient Iranian prophet and religious reformer, regarded as the founder of Zoroastrianism, the world’s oldest known monotheistic faith. Zarathushtra was born around the 2nd millennium BCE in eastern Iran (conservative estimates place his birth around c. 1000 BCE). Born into a family of priestly or noble status, Zarathushtra was educated from a young age and became a pries

Born : c. 7th–6th century BCE, likely in eastern Persia (modern-day Iran)

Died : Unknown, possibly in Persia

Prophetic Voice of Zoroastrianism: Zarathustra founded one of the earliest monotheistic religions, teaching devotion to Ahura Mazda and the moral choice between good and evil.

Legacy in Spiritual and Philosophical Thought: His teachings on free will and moral responsibility influenced Zoroastrian ethics and later religious thought.

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Zarathushtra, also known as Zoroaster, was an ancient Iranian prophet and religious reformer, regarded as the founder of Zoroastrianism, the world’s oldest known monotheistic faith. Zarathushtra was born around the 2nd millennium BCE in eastern Iran (conservative estimates place his birth around c. 1000 BCE). Born into a family of priestly or noble status, Zarathushtra was educated from a young age and became a priest by age 15. At age 30, during a ritual purification, he experienced a divine vision of Ahura Mazda (the Wise Lord), who appointed him to preach a new message of ethical monotheism and cosmic dualism.

Zarathushtra’s teachings initially met with strong opposition from established religious authorities and even his own family, forcing him into exile. Eventually, he gained the support of King Vishtaspa, allowing his teachings to take root. He is said to have married and had three sons and three daughters and spent his later years at the court of Vishtaspa, establishing the precepts and rituals of the new faith.

Zoroastrianism (also known as Mazdayasnā or Beh-dīn) was the dominant faith of Achaemenid and Sasanian Persia, only declining in the 7th century CE. The contrast between Asha (truth, right, and order) and Druj (deceit and falsehood) is at the core of Zoroastrian theology. By prioritizing monotheism and a cosmic dichotomy, Zoroastrian theology has influenced the metaphysics of Abrahamic, Buddhist, and Manichaean faiths. Zarathushtra has been interpreted by various religions and scholars but has been most directly adopted by Islam.

Founder of Zoroastrianism: Established the world’s oldest known monotheistic religion, which became the state faith of the Persian empires until the 7th century CE.

Composer of the Gathas: Authored the foundational hymns of Zoroastrianism, which remain central to the faith.

Proponent of Ethical Dualism: Taught the cosmic struggle between good (Ahura Mazda) and evil (Angra Mainyu), emphasizing the importance of individual choice and free will.

Advocate of Moral Principles: Promoted the triad of “good thoughts, good words, good deeds” as the path to righteousness and happiness.

Indo-Iranian Religious Tradition: Zarathushtra’s teachings reformed the polytheistic Mazdayasni beliefs of his time, emphasizing monotheism and ethical conduct.

Ethical Dualism: Introduced the concept of a cosmic struggle between good and evil, influencing later religious and philosophical traditions.

Impact on Later Religions: Zoroastrianism influenced Judaism, Christianity, Islam, and Greek philosophy, especially in concepts of angels, judgment, eschatology, and free will.

Amesha Spentas: Zarathushtra’s theology included seven “beneficent immortals,” personifying divine attributes and ethical ideals, which shaped Zoroastrian cosmology and ethics.

• “Truth is best (of all that is) good.” — Ahunuvaiti Gatha; Yasna 31.22

• “A reflective, contented mind is the best possession.” — Ushtavaiti Gatha; Yasna 43.15

• “May we be those who shall heal this world.” — Yasna 30.9

• “To think a good thought, to speak a good word, to do a good deed is the best. Everlasting happiness to he who is righteous.” — Yasna 28.11

State Religion of Empires: Zoroastrianism became the official faith of the Achaemenid, Parthian, and Sassanian empires, shaping Persian culture and governance.

Influence on World Religions: Zarathushtra’s teachings on monotheism, angels, judgment, and eschatology influenced Judaism, Christianity, and Islam.

Survival and Diaspora: After the Muslim conquest of Persia, Zoroastrian communities survived in Iran and India (the Parsis), maintaining their religious identity and traditions.

Modern Scholarship and Practice: The Gathas and Avesta remain central to Zoroastrian worship and are studied by scholars worldwide. Ongoing debates concern the dating of Zarathushtra, interpretation of his hymns, and the extent of his influence on later traditions.

2015: Fourth edition of The Good Life: An Introduction to the Religion of Zarathushtra published by the Zoroastrian Association of Greater New York.

Ongoing: Academic conferences, lecture series, and Zoroastrian studies programs at major universities worldwide.

Ongoing: Zoroastrianism and Zarathushtra’s teachings included in comparative religion and philosophy curricula.

Secondary Literature (Scholarship):

Insler, Stanley. The Gathas of Zarathushtra. Acta Iranica 8, Tehran and Liège, 1975.

Jackson, A.V. Williams. Zoroaster: The Prophet of Ancient Iran.

Jafarey, Ali A. The Gathas, Our Guide.

Irani, Dinshaw J. (ed. K.D. Irani). Understanding the Gathas.

Taraporewala, Irach J.S. The Divine Songs of Zarathushtra.

Archival or Online Sources:

A 4th-century Sassanid high-relief carving reinterpreted as Zoroaster during the investiture of Ardeshir II.

Detail from Raphael’s School of Athens fresco, portraying Zoroaster as an astronomer holding a globe in philosophical discussion.

Duccio di Buoninsegna’s tempera panel from the Maestà altarpiece, depicting Hosea as a prophetic figure with a book.

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