Cyropaedia

Written around 370 BC by the Athenian soldier-historian Xenophon, the Cyropaedia follows Cyrus the Great from his boyhood in the Persian educational system and his years at the Median court of his grandfather Astyages, through the campaigns and statecraft that built the Achaemenid Empire. Only the first of its eight books is strictly about his "education" in the literal sense — the rest trace his conquests of Armenia, Scythia, and Assyria, and his methods for organizing and holding a vast, multiethnic empire.

Part historical narrative, part didactic treatise on leadership and kingship, the Cyropaedia was aimed at Greek readers who might themselves command armies or rule cities. Rediscovered in Renaissance Europe as a manual on political virtue, it became a foundational text in the "mirror for princes" tradition — a portrait of the ideal ruler as much as a life of Cyrus himself.