Skip to content

Political philosophy

Empire and diversity

How ancient world-empires governed peoples of radically different languages, religions and laws — the Persian policy of rule through tolerated local order, its Hellenistic and Roman successors, and the recurring question of whether an empire is held together better by uniformity or by accommodation.

The defining problem of world-empire

The city-state governs people who broadly share a language, a religion and a law. The world-empire does not — it governs dozens of peoples who share almost nothing. How a multi-ethnic, multi-religious, multilingual territory can be held together as one political order is the defining problem of empire, and the platform reads it across the three imperial cases it studies most closely: Achaemenid Persia, the Hellenistic kingdoms, and Rome.

The Persian model: rule through tolerated order

The Achaemenids pioneered the strategy of governing diversity by accommodating it. Rather than impose Persian language, law and religion on subject peoples, the king ruled above a patchwork of preserved local orders — Babylonian law in Babylon, Egyptian cult in Egypt, Judaean worship in Jerusalem, Greek civic forms in Ionia. The Cyrus Cylinder makes the policy explicit: gods are returned to their temples, peoples to their homes, and the king presents himself as the restorer of each people's own order. The platform reads this under kingship and legitimacy: tolerated diversity was not sentiment but statecraft — it bound subjects in by giving them a stake in the empire's continuance, and it spared the king the impossible cost of forcing uniformity on a continent.

The Roman counterpoint

Rome offers the instructive contrast. It too governed enormous diversity and was famously tolerant of local gods and customs — but it also ran a powerful assimilating current, extending its own citizenship ever more widely until, in 212 CE, nearly every free inhabitant of the empire was a Roman. The platform reads this against Roman citizenship and provincial government: where Persia held its peoples as distinct subjects of a common king, Rome increasingly dissolved the distinction by making them all Romans. Two opposite answers to the same problem — accommodation versus assimilation — and the long argument over which better holds an empire together runs through all of imperial history.

The Hellenistic middle case and the lasting question

The Hellenistic kingdoms sat between the two: Greek-Macedonian dynasties ruling largely non-Greek populations through a Greek administrative language and an inherited Persian apparatus, neither fully accommodating nor fully assimilating. The platform reads empire and diversity as a question no ancient empire settled and no modern state has either — whether a political order spanning many peoples is more durable when it lets them remain themselves or when it makes them into one. Persia's answer was the first, and for two centuries it worked.