In which Rome falls and a philosopher-bishop explains that history has a shape, a direction, and a destination
♦ ♦ ♦How do you think about history?
Do civilizations rise and fall endlessly? Or is history moving toward something?
A note: The Greeks thought time was cyclical — history repeating in endless patterns. Augustine changed this. He was the first to argue that history is linear — that it has a beginning, a direction, and a destination. This idea has shaped how we think about everything since.
In August 410 AD, the unthinkable happened. For eight centuries, Rome had been the center of the known world. Its legions were invincible. Its law was absolute. Its gods had blessed it with dominion over all nations. Then, in three days, Alaric and his Visigoths sacked the city. The greatest civilization on earth was humbled.
Pagan philosophers were quick to assign blame. Rome, they said, had abandoned the old gods. The state religion had been Christianity for a century now. And what was Christianity? A weakness. A religion of slaves and cowards. It taught forgiveness instead of virtue, humility instead of greatness. It had softened Rome’s martial spirit. That is why Rome fell.
Augustine, now in his mid-fifties and bishop of Hippo in North Africa, heard the accusations. Christian refugees were flooding into North Africa. They too were confused, traumatized. They had believed God would protect Rome. How could Rome fall if God was on its side?
Augustine decided to answer. The result was the City of God, begun in 413 AD and completed in 426 AD — a work of 22 books, over a thousand pages, one of the greatest philosophical and theological works ever written.
Augustine begins his answer with a startling claim. Rome did not fall because it abandoned the gods. Rome fell because Rome was always destined to fall. There are not, he argues, many histories. There is one history, and it follows a single principle:
All of human history, Augustine claims, is the interplay between these two loves. There is the City of God — those whose ultimate love and allegiance is to God. And there is the City of Man — those whose ultimate love is to themselves, to power, to glory, to domination.
These two cities have existed since the beginning. Cain and Abel represent them. David and his enemies represent them. And they will exist until the end of time.
Here is where Augustine revolutionizes how humans think. The Greeks thought time was cyclical. Everything that happens has happened before and will happen again. The Stoics thought time was an eternal return — infinite cycles repeating the same pattern.
Augustine says: No. History is linear. It has a beginning, when God created the world. It has a trajectory, as God unfolds his purposes through time. And it has an end, when time itself will cease and eternity will begin.
Within this linear history, everything that happens has meaning. Events are not random. They are not purposeless cycles. They are part of a divine narrative that is moving toward a conclusion.
So Augustine’s answer to the pagan accusation is this: Rome did not fall because it became Christian. Rome fell because Rome was always a city built on the love of power and glory. Rome was part of the City of Man. And the City of Man is not permanent. It rises and falls according to divine law. Rome rose when its love of power served, however unknowingly, divine purposes. Rome fell when it became purely self-serving.
Christianity did not weaken Rome. Christianity exposed what Rome always was — a human city, not an eternal city. Only the City of God is eternal.
In defending Christianity, Augustine also develops one of philosophy’s most influential doctrines: just war theory. Augustine asks: is war ever morally justified for a Christian state?
His answer is yes — but only under specific conditions. A just war must:
1. Have just cause: Not revenge or conquest, but defense or restoration of justice
2. Be declared by legitimate authority: Not a private person, but a ruler
3. Have right intention: The cause must truly be what you say it is
This doctrine, controversial though it remains, shapes all subsequent Western thought about war and peace. Augustine refuses the Stoic answer (endure all suffering) and the Epicurean answer (avoid conflict). He insists that justice sometimes requires force.
All human history is divided by what people ultimately love.
Not by their conscious beliefs or stated ideologies. But by what they actually love — what they are willing to sacrifice for, what they truly seek.
This is a deeply philosophical move. Augustine is arguing that the ultimate shape of history is determined not by economics or geography or military might, but by the orientation of the human soul. What does the soul love? That determines everything.
History is not cyclical. It is linear, moving from creation toward an end.
The Greeks inherited from myth the idea that time circles endlessly. But Augustine says: time is an arrow. It begins with creation. It proceeds through ages. It terminates in the final judgment. Every moment is unique, unrepeatable, meaningful.
This idea — that history has direction, that the past is genuinely past and the future is genuinely open — becomes foundational to the entire modern world. The idea of progress, the idea of innovation, the sense that the future can be different from the past — all of this depends on Augustine.
A state committed to justice may use war to defend the innocent or restore right order.
Augustine refuses both the Stoic answer (accept everything) and the Epicurean answer (avoid conflict). He insists that a truly loving response to injustice sometimes requires force.
This is controversial. Many argue Augustine opened the door to wars falsely claimed to be “just.” But Augustine himself is careful: the conditions are strict, the intention must be pure, and the goal is peace, not conquest.
Augustine transforms philosophy from a search for eternal truths into a search for meaning in history. The question becomes: where do I stand in history? Which city do I belong to? What does my love reveal about my true allegiances?
This idea — that history has meaning, that the human story is going somewhere — shapes everything that comes after. Dante will use it to structure the Divine Comedy. Aquinas will use it to reconcile faith and reason across time. Hegel will make it the foundation of his philosophy of history. Marx will invert it but keep its structure. Even modern secular thought inherits Augustine’s belief that history is linear and meaningful.
And for this course, Augustine plants another seed: the City of God is the community of those forgiven, those whose ultimate love is to God. How does one enter that city? Through forgiveness. Through grace. Through the dissolution of the self-love that keeps us in the City of Man.
Three dates mark this turning point in how humans think about time and history.
Rome falls. The world is shaken. The old certainties are gone. Encode “04” and “10” from your PAO. Link to a great city burning, its eternal walls broken, smoke rising to heaven.
The response begins. History will be reinterpreted. Encode “04” and “13” from your PAO. Link to an old man at a desk, writing, seeing history itself as a story with meaning.
Twenty-two books. The medieval world is born. Encode “04” and “26” from your PAO. Link to a completed manuscript, glowing with the weight of meaning, history itself redeemed.
Cover the dates above. Can you recall all three?
1. When did Alaric sack Rome?
2. When did Augustine begin writing City of God?
3. When was it completed?
Location 23 holds the moment when humanity learned to think about history differently. Not as cycles, but as a story. Not as chaos, but as meaningful progress toward a destination.
Your 23rd location holds Two Cities. Five vivid images:
1. Rome burning, its walls broken, smoke rising, soldiers fleeing — The fall of Rome. The eternal city revealed to be mortal. The shock that forces a rethinking of everything.
2. Two cities side by side, one built of stone and power (Rome), one built of light and love (the City of God) — Two cities overlapping, occupying the same space but belonging to different realities.
3. A scale or balance, with “love of God” on one side and “love of self” on the other, weighing every moment of history — The ultimate principle of all history. Not economics, not geography, but love.
4. Time flowing not in circles but as an arrow, beginning at creation, pointing toward a destination — History as linear, meaningful, directional. The past cannot return. The future is open. Each moment matters.
5. Augustine at his desk, older now, looking up from his pages with eyes that see history itself as sacred — The philosopher as one who interprets meaning. Philosophy as the search for meaning in time.
Choose 2–3 questions to sit with.
Augustine says history is divided by what people ultimately love. In your own life, what are you building the city of? God or self?
Augustine says history is linear, moving toward a destination. Do you think that is true? Or do we live in cycles?
Augustine rejects the pagan explanation. Rome fell not because of Christianity but because Rome was always the City of Man. Is this convincing?
Augustine argues that force can be justified in defense of justice. Is this right? Where is the line between justice and vengeance?
If Augustine is right, your life is shaped by your ultimate love. What do your choices reveal you ultimately love?
The modern belief in progress depends on Augustine’s idea that history is linear. Is progress real, or an illusion?
Augustine says only the City of God is permanent. All earthly cities eventually fall. What does this mean for how we live?
Start the timer, then write everything you can remember from this lesson — without looking back.
Retrieve from memory without looking back.
What are the two cities? What divides them?
City of God: Those whose ultimate love is to God
City of Man: Those whose ultimate love is to themselves
All of history is the interplay between these two loves.
410 AD — The Sack of Rome by Alaric
413 AD — Augustine begins the City of God
426 AD — City of God completed
What was Augustine’s answer to the pagan accusation?
Rome fell not because it became Christian, but because Rome was always the City of Man, built on love of power and glory. All earthly cities eventually fall. Only the City of God is eternal.
What were Augustine’s three main philosophical contributions in this work?
1. Two Cities, Two Loves: All history is divided by what people ultimately love
2. Linear History: History is not cyclical but linear, moving from creation toward an end
3. Just War: A state committed to justice may use force to defend the innocent or restore right order
Walk through Location 23. Describe the 5 images:
Which city are you building? What does your ultimate love reveal?
In Lesson 24, we meet Boethius, the last Roman and the first medieval. He sits in prison awaiting execution and writes the Consolation of Philosophy. Lady Philosophy comforts him. But does reason alone console?
This lesson’s content returns in: Lesson 26 (+3), Lesson 30 (+7), and Lesson 37 (+14).