Ethical dualism or, as theorized by Descartes, between thought and extension. Ethical dualism on the other hand highlights the moral dimension instead or in addition to the metaphysical one, and envisions an inherent situation of conflict between two antagonistic forces, like light and darkness, Good and Evil. One of the most known and clear-cut interpretations of ethical dualism is the one conceptualized by Zoroastrianism, the ancient Persian religion, which bases its thought on the figure of the prophet Zoroaster (or Zarathustra), who claimed the existence of two original and contrasting principles, Ahura Mazda and Ahriman, respectively representing the forces of Good and
Zoroastrianism progress towards perfection". Its basic maxims include: The name "Zoroaster" is a Greek rendering of the name "Zarathustra". He is known as "Zartosht" and "Zardosht" in Persian and "Zaratosht" in Gujarati. The Zoroastrian name of the religion is "Mazdayasna", which combines "Mazda-" with the Avestan language word "yasna", meaning "worship, devotion". In English, an adherent of the faith is commonly called a Zoroastrian or a Zarathustrian. An older expression still used today is "Behdin", meaning "The best Religion | Beh < Middle Persian Weh (good) + Din < Middle Persian dēn < Avestan Daēnā". In Zoroastrian liturgy the term is