In this episode of Philosophizing with a Hammer, we delve into the ancient religion of Zoroastrianism and its profound influence on Western thought. Starting with an exploration of The Spirit of Zoroastrianism by Prods Oktor Skjærvø, we uncover the core tenets of this fascinating belief system—its dualistic worldview, emphasis on free will, and the eternal struggle between good and evil, a core idea in Nietzsche’s philosophy.