The Lasting Influence of St. Augustine on Political Theory

When the Visigoths sacked Rome in 410 CE, the shock rippled across the ancient world. Many believed the eternal city had fallen because it abandoned its old gods for Christianity. A bishop in North Africa named Augustine of Hippo answered that accusation with a book that would reshape how the West thought about power, faith, and government for over a thousand years. His ideas did not just defend Christianity. They built an entirely new way of imagining the relationship between earthly rulers and divine authority, leaving a mark on political theory that survives in debates we still have today.

Who was St. Augustine? 🔗

Augustine of Hippo (354-430 CE) is widely regarded as one of the most influential thinkers in Western civilization. He converted to Christianity and was baptised by St. Ambrose, later becoming the Bishop of Hippo in present-day Algeria. He wrote prolifically, but his political legacy rests mainly on one monumental work: The City of God (De Civitate Dei), composed between 413 and 426 CE while the Roman Empire was crumbling under barbarian attacks.

What makes Augustine so important is that he stood at a turning point. When Christianity became the official religion of the Roman Empire under Theodosius, the old political philosophy of Greece and Rome no longer fit. Augustine fused classical thought with Christian theology, creating a framework that, according to Britannica, would dominate medieval thought as the church became the main repository of learning in the West.

The doctrine of the two cities 🔗

The heart of Augustine’s political thought is the idea of two cities. He divided all of human history and society into the City of God (Civitas Dei) and the Earthly City (Civitas Terrena). This is the single most influential concept he gave to political theory.

It is crucial to understand that these are not physical places. Augustine did not equate the earthly city with Rome, nor the City of God with the church as an institution. As scholars note, the distinction is eschatological rather than political – it separates those destined for eternal life with God from those who are not. The two cities are really two communities defined by two kinds of love.

Two loves, two communities 🔗

Augustine captured the distinction in a famous line: two cities were created by two loves. The earthly city is built on the love of self, even to the point of contempt for God. The City of God is built on the love of God, even to the point of contempt for self. In the earthly city, citizens are motivated by self-interest, pride, the desire for power, and material gain. In the City of God, citizens orient their lives toward eternal truth and divine peace.

This had a radical political consequence. Augustine argued that no earthly empire – not even a Christian one – could serve as the vessel of ultimate truth or divine hope. Rome was not eternal, and no political order could carry the weight of ultimate salvation. In a single move, he severed the identification between political power and divine authority that had dominated ancient thinking. The fate of an empire was simply no longer the measure of God’s purposes.

The state as a remedy for sin 🔗

Augustine had a distinctive view of where the state comes from and why it exists. He believed that human beings were originally innocent and pure-hearted, living without coercive authority. But personal greed and self-aggrandisement led humanity to defy God’s will – this is the consequence of the Fall and original sin. In response, God created the state as both a punishment for sin and a remedy against it.

This dual idea of the state as punitive and remedial became enormously influential. According to the Internet Encyclopedia of Philosophy, Augustine saw political states, imperfect as they are, as serving a divine purpose: they maintain order and prevent what would later be called the war of all against all. The state, in this sense, is a divine gift that restrains human sinfulness – even though it exists only because of sin in the first place.

This is why Augustine’s view of government is so different from Aristotle’s. For Aristotle, the state existed to help people achieve the good life and flourish. For Augustine, the moral purpose of the state was more modest: to safeguard security and basic sufficiency so that humans could pursue their true fulfillment, which lay beyond earthly life altogether.

Justice and the limits of earthly power 🔗

Augustine offered one of the most quoted critiques of political power in all of Western thought. He argued that without true justice, a kingdom is no different from a band of robbers. As he asked rhetorically, remove justice, and what are kingdoms but gangs of criminals on a large scale?

This was a profound claim. Augustine held that true justice requires giving God his due, and since no earthly state could perfectly do this, no state could possess true justice. Earthly regimes could only be measured in relative terms – one being more just than another. The Roman Empire, for all its grandeur, could not be a true commonwealth because it lacked genuine justice. This idea placed a permanent question mark over the moral pretensions of all worldly power, reminding rulers that their legitimacy was always conditional and incomplete.

The just war tradition 🔗

Augustine is also credited as the first great Christian thinker to systematically address the morality of war. He argued that a ruler could wage war justly under certain conditions, primarily to defend the state and restore what he called earthly peace. Because security and peace helped Christians pursue communion with God, he considered defensive wars not just lawful but at times a stern necessity.

He drew a clear line between private violence, which he saw as sinful, and public war waged under legitimate authority. This foundation – that war requires proper authority and right intention – shaped the just war tradition that runs through Thomas Aquinas and continues to influence international law and military ethics today.

How Augustine shaped medieval political thought 🔗

Augustine’s greatest impact came after his death, when his ideas became the intellectual backbone of medieval Christendom. His doctrine of the two cities gave medieval Europe a way to think about the coexistence of two great authorities: the spiritual and the temporal.

The doctrine of the two swords 🔗

Medieval political thought came to be characterised by the Doctrine of the Two Swords. One sword symbolised the temporal power of the emperor or king, and the other the spiritual power of the church. According to Indian academic resources hosted on INFLIBNET, the medieval individual lived under this dual authority of Pope and Emperor, each claiming a universal dominion and the final allegiance of every person.

The doctrine traces partly to Pope Gelasius I, who argued that both spiritual and temporal authority were ordained by God. But it grew out of the dualist framework Augustine had established. Over time, papal theorists pushed the doctrine further, claiming that the Pope held both swords and merely granted the temporal sword to rulers – giving the papacy a theoretical right to depose kings, as documented in studies of medieval political theory.

Theocratic and dualist tendencies 🔗

Here lies an important tension in Augustine’s legacy. His thought fed two different streams. On one hand, the sharp separation of the spiritual and earthly realms supported a dualist view, where church and state are distinct authorities with separate functions. On the other hand, because Augustine held that spiritual concerns are higher than temporal ones, his ideas were used to justify theocratic claims of church supremacy over secular rulers.

Medieval thinkers leaned heavily on this hierarchy. Some, like John of Salisbury, argued that the king received his sword from the church and had to rule according to its advice, with the state having no truly independent existence outside the church. This reflected Augustine’s view that rulers act as a restraint on human sinfulness while the church offers mercy and the path to salvation.

Augustine’s influence beyond the Middle Ages 🔗

Augustine’s reach did not end with the medieval period. His framework directly inspired later thinkers who reworked the relationship between religion and politics. Martin Luther’s famous two kingdoms doctrine – separating the spiritual kingdom of true believers from the temporal kingdom governed by the sword – was built on the foundation of Augustine’s City of God, though Luther pushed the separation even further.

His pessimistic view of human nature, his idea of the state as a necessary check on sinful impulses, and his insistence that earthly power can never be the source of ultimate meaning all echo through later political philosophy. The concern with how a community held together by self-interest and force differs from one held together by genuine moral love continues to resonate in modern political theory.

Relevance in a diverse democracy 🔗

For students examining politics in a country marked by deep religious diversity, Augustine’s thought is more than a historical curiosity. His distinction between earthly and heavenly cities offers a way to think about how religious communities can hold firm spiritual commitments while still participating fully in a secular, democratic system. The reminder that human institutions – however necessary for order and justice – remain imperfect reflections of higher ideals is a useful lens for evaluating any government. It encourages a healthy scepticism toward those who claim that political power alone can deliver complete human fulfillment.

Why Augustine still matters 🔗

Augustine’s lasting contribution was to insert a permanent gap between the political and the ultimate. Before him, classical thought tended to treat the state as the highest community, the place where humans achieved their fullest purpose. Augustine argued that true human fulfillment lay beyond earthly life entirely, in communion with God, and that no government could provide it. This humbled political power without making it worthless. The state still mattered – it kept order, restrained evil, and protected peace – but it could never claim to be the final word on human destiny.

That single insight reorganised Western political thinking. It made room for the idea that there could be a legitimate authority higher than the king, it fuelled centuries of debate between church and state, and it planted the seeds for later arguments about the limits of government and the separation of spiritual and political life. Few thinkers have shaped the political imagination of an entire civilisation as deeply as the Bishop of Hippo.

What do you think? If Augustine was right that no earthly government can deliver complete human fulfillment, what should we realistically expect a state to achieve? And in a religiously diverse society, is his sharp separation between the spiritual and the temporal a strength or a source of conflict?

References

1. https://www.britannica.com/topic/political-philosophy/St-Augustine
2. https://philosophy.institute/western-philosophy/augustines-political-philosophy-city-of-god-vs-earthly-city/
3. https://iep.utm.edu/augustine-political-and-social-philosophy/
4. https://www.medievalists.net/2025/06/how-medieval-thinkers-justified-war/
5. https://ebooks.inflibnet.ac.in/psp07/chapter/st-augustine-and-thomas-aquinas/
6. https://www3.dbu.edu/mitchell/medievalpolitical_thought.htm
7. https://en.wikipedia.org/wiki/Two_kingdoms_doctrine