Edward Gibbon · Civilisations

Why Did Rome Fall?

Gibbon’s answer to the greatest question in history - what brought down the Roman Empire - and his famous, controversial diagnosis of the causes of decline.

From the lesson

Why did Rome fall? It is perhaps the single most discussed question in all of history - the question of what brought down the greatest empire of the ancient world, the very model of civilisation. Scholars have proposed hundreds of causes over the centuries, from lead poisoning to Christianity to economic collapse to barbarian invasion to moral decay. Gibbon, in his Decline and Fall, gave the question its most famous and influential treatment - not a single simple cause, but a rich and complex analysis of the many interacting factors that, over centuries, brought down the Roman Empire. His answer has shaped all subsequent debate about the fall of Rome and the decline of civilisations.

A central theme in Gibbon’s analysis is the loss of civic virtue - the decline of the active, public-spirited citizenship, the martial vigour, and the love of liberty that had built the Roman Republic and early Empire. As Rome grew prosperous, imperial, and despotic, Gibbon argued, its citizens lost their civic virtue and martial spirit: they became passive subjects rather than active citizens, soft with luxury rather than hardy with discipline, devoted to private pleasure rather than public duty, dependent on mercenary and barbarian soldiers rather than citizen-armies. The loss of the civic virtue, martial vigour, and love of liberty that had built Rome - the transformation of vigorous, public-spirited, martial citizens into passive, luxurious, private subjects - was, for Gibbon, a central cause of the decline: a civilisation that loses the virtues that built it, that becomes soft, passive, and dependent, loses the strength to defend and sustain itself.

It is important to recognise that Gibbon did not reduce Rome’s fall to a single cause but offered a rich, complex analysis of many interacting factors: the immoderate greatness and overextension of the empire; the loss of civic virtue and martial vigour; the corruption and despotism of the imperial government; the economic strains and the burden of defence; the pressure of the barbarian invasions; the effects of Christianity; the division of the empire; the loss of the qualities that had built Rome. He saw the fall not as the result of any single cause but as the cumulative effect of many interacting factors operating over centuries - a complex process of decline with multiple, interacting causes. This recognition of the complexity and multiplicity of the causes of decline - the understanding that the fall of a great civilisation is not the result of any single cause but of many interacting factors operating over a long period - is one of the marks of Gibbon’s sophistication as a historian, and a model of how to think about the complex causes of great historical processes.

This is the opening of the lesson. The rest — the dialogue, the primary source, and the recall — is in the app.

What you'll be able to recall

You learned that Gibbon sought the causes of Rome’s fall, famously summarising it as ‘the triumph of barbarism and religion.’ Reconstruct his main explanations and the debate over them, in your own words.

Leads to Ibn Khaldun.

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