“In the inscriptions of Darius I, who came to the Persian throne after the death of Cyrus’s son Cambyses in 522 BCE, we find a combination of three themes that would recur in the ideology of all successful empires: a dualistic worldview that pits the good of empire against evildoers who oppose it; a doctrine of election that sees the ruler as a divine agent; and a mission to save the world.”
