Athens, Sparta, and Thucydides — HIST 304: Greek Civilization (Stephenson)

Divergent Origins — Two Poleis, Two Paths c. 650 – 550 BCE

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The same world produces radically different political experiments. Both Athens and Sparta emerge from the same Dark Age baseline: small agricultural communities with basileis and oikoi, no written law, power held by aristocratic clans. By 550 BCE they have developed into the two most influential poleis in the Greek world — and into near-perfect opposites. The seventh and sixth centuries are when the decisive divergence happens. Understanding the Peloponnesian War (431–404 BCE) requires understanding why these two poleis, sharing the same language, the same gods, and many of the same founding institutions, come to regard each other as existential threats.

c. 650–550 BCE · Lacedaemon

Sparta’s solution to the Messenian problem — a polis organised for permanent war

Sparta’s decisive political turn is not philosophical but military: the conquest of Messenia (c. 720 and again c. 650 BCE) provides the agricultural surpluses that free Spartan citizens from productive labour — but creates a subjected Helot population that outnumbers citizens by a ratio of roughly 7:1. The entire Lycurgan constitution can be read as a response to this problem. The agoge, the syssitia, the prohibition on trade, the restriction of Spartan citizens to military life — all serve a single function: maintaining a standing citizen army capable of suppressing a Helot population that has every reason to revolt. Sparta is not a city that happens to have a professional army; it is an army that happens to have a city.

c. 560–550 BCE · Peloponnese

The Peloponnesian League — alliance without empire

Sparta’s response to the insecurity of its position is hegemonic rather than imperial: rather than subjecting Peloponnesian neighbours (as it subjected Messenia), Sparta builds a network of bilateral alliances that collectively form the Peloponnesian League (Lacedaemonians and their allies). Member states retain their constitutions and internal autonomy; they owe military service to Sparta in external wars. This is a deliberately conservative structure. Sparta is wary of extending itself beyond the Peloponnese because every citizen soldier sent abroad is a soldier unavailable to suppress a Helot revolt at home. The same structural constraint that makes Sparta a great land power prevents it from becoming a naval empire.

650–600 BCE

560–550 BCE

c. 632–594 BCE · Athens

From Cylon to Solon — Athens navigates crisis without Sparta’s solution key sequence

Athens’ seventh-century crises are social rather than military: debt-bondage of free citizens, aristocratic monopoly on land and law, the threat of tyranny (Cylon’s failed coup, c. 632). Draco’s law code (621 BCE) writes down existing custom without reforming it. Solon’s reforms (594 BCE) take a different approach: cancellation of debt-bondage (seisachtheia), a property-class system that opens political participation to middling farmers, and the publication of laws in the agora. Athens does not solve its problem through military reorganisation of society but through political negotiation and constitutional reform. This difference in method will matter: Athens learns early that political conflict can be resolved by changing the rules rather than by changing the population.
Aristotle, Ath. Pol. 12 — Solon’s own elegies on his reforms (Perseus)

c. 561–508 BCE · Athens

Peisistratos and Cleisthenes — tyranny followed by radical democracy

Peisistratos’s tyranny (three periods: 561, 556, 546–527 BCE) is not, in the Greek sense, incompatible with the development toward democracy: he governs within Solon’s framework, promotes Athenian commercial and religious identity (the Panathenaic festival is systematised under his rule), and does not undo the constitutional reforms. His sons are expelled in 510 BCE with Spartan military assistance — a moment Sparta will later regret. Cleisthenes’ radical reorganisation (508/507 BCE), creating the deme-tribe system that makes citizenship territorial and civic identity genuinely cross-regional, is the decisive step. A citizen is now an Athenian because he is registered in a deme, not because of his ancestry. Democracy, in the etymological sense, is now possible: the demos can act as a collective body because it has been institutionally constructed as one.
Aristotle, Ath. Pol. 20–22 — Cleisthenes’ reorganisation (Perseus)

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Course theme: Two constitutions, one question By 550 BCE Athens and Sparta have produced the two most influential political experiments in Greek history. Sparta’s system is total, stable, and oriented toward collective military efficiency; it will not change significantly for three centuries. Athens’ system is dynamic, contested, and oriented toward individual political participation; it will change repeatedly. The question both systems are answering — what does the city owe its citizens, and what do citizens owe the city? — will be the central question of the Peloponnesian War.

Corinth

c. 650–550 BCE · Corinth as model and warning. While Athens and Sparta diverge, Corinth quietly becomes the most commercially successful polis in Greece, controlling the Isthmus and both its ports (Lechaion on the Corinthian Gulf, Cenchreae on the Saronic). The Bacchiad and then Cypselid tyrannies fund a colonial network stretching to Corcyra (northwest) and Syracuse (Sicily). Corinthian pottery dominates Mediterranean trade. Corinth is not a military power on the Spartan scale or a democratic experiment on the Athenian one; it is a mercantile oligarchy whose prosperity depends on keeping the sea lanes open and the two great land powers from going to war with each other. Its geopolitical position — on the land bridge between northern Greece and the Peloponnese, athwart the trade routes between the Aegean and the west — makes it indispensable to both sides and permanently vulnerable to both.

The Persian Threat — Ionian Revolt to Marathon c. 550 – 490 BCE

c. 547 BCE · Lydia / Ionia

Cyrus conquers Lydia — the Greek cities of Ionia become Persian subjects

The fall of Croesus of Lydia to Cyrus of Persia (c. 547 BCE) brings the Greek cities of the Ionian coast under Persian overlordship. The transition is gradual and initially not catastrophic: Greek cities retain internal self-government, pay tribute, and supply troops. Persian administration is through local tyrannoi answerable to the satraps. But the relationship is structurally incompatible with polis autonomy: the Ionian Greeks are subject peoples, not citizens of a self-governing community. The Persians do not understand, and the Greeks cannot accept, the distinction. The collision is structural, not merely political. The figure of Croesus himself — wealthy, inquiring, and ultimately humbled — becomes a paradigm for how fortune operates in human affairs, pondered by Greeks long after his fall.

499–494 BCE · Ionia

The Ionian Revolt — and Athens’ fateful decision to send ships

The Ionian Revolt (led initially by Aristagoras of Miletus) is triggered by internal Milesian politics and Persian strategic overreach in Naxos. Aristagoras tours mainland Greece seeking military support. Sparta refuses: King Cleomenes is told the journey to the Persian capital takes three months — he declines immediately, on the grounds that no Spartan army should march that far from home. Athens and Eretria send twenty and five ships respectively. The Athenian ships participate in the burning of Sardis, the Lydian capital. Darius asks who the Athenians are; he is told; he orders a slave to remind him before dinner every day: “Master, remember the Athenians.” The Persian Wars begin at this moment, not at Marathon.
Herodotus V.97 — Athens’ decision to help Ionia (Perseus)

547 BCE

499–494 BCE

490 BCE

490 BCE · Marathon

Marathon — Athens alone, and what the victory means turning point

The Persian punitive expedition of 490 BCE (under Datis and Artaphernes) attacks Eretria, destroys it, and lands at Marathon in Attica. Athens sends to Sparta for help; Sparta is celebrating a religious festival and arrives after the battle. The Athenians — with the Plataeans as their only ally — defeat the Persian force at Marathon through tactical innovation: the hoplite line advances at a run, closes quickly, and crashes into the Persian centre before the Persian archers can loose effective fire. The general Miltiades is the architect. The victory is militarily significant but strategically limited: it stops one punitive expedition, not the Persian Empire. What it does politically is enormous: it confirms Athenian democratic institutions against both internal oligarchic opponents (who had been in contact with Persia) and external despotic power. The Athenian demos fights the greatest empire in the world and wins. The political consequence of that fact cannot be overstated.
Herodotus VI.108–117 — the battle of Marathon (Perseus)

Thermopylae, Salamis, Plataea — The War That Defines Greece 480 – 479 BCE

480 BCE · Thermopylae

Thermopylae — Sparta’s sacrifice and what it chooses to remember Sparta

Leonidas leads three hundred Spartiates (plus allies) to hold the pass at Thermopylae against Xerxes’ vastly larger army. They hold for two days; on the third day, a mountain path is revealed by a local traitor and the position is turned. Leonidas dismisses most of the allied forces and remains with the Spartans and Thespians to fight to the last. The military significance is limited — the pass falls — but the psychological and political significance is enormous. Sparta’s self-understanding for the next century is built around Thermopylae: the willingness to die at one’s post, in obedience to the nomos, without hope of survival, is the Spartan civic ideal made flesh. The inscription at the pass — “Go tell the Spartans, stranger passing by, that here, obedient to their laws, we lie” (Simonides) — encodes the Spartan political theology in twelve words.
Herodotus VII.220–228 — the last stand at Thermopylae (Perseus)

479 BCE · Plataea

Plataea — Sparta’s land victory completes the liberation

The land battle at Plataea (479 BCE) is the decisive engagement that removes the Persian army from mainland Greece. The Spartan general Pausanias commands the combined Greek force; the Spartans bear the main tactical burden of the hoplite engagement against the Persian infantry of Mardonius. Athens and Corinth hold different sections of the line. Plataea is the victory the Spartans understand: a hoplite battle, on Greek soil, led by a Spartan. It confirms Spartan self-understanding as the guardian of Greek freedom through land warfare. The Athenian reading of the war will be different: Salamis, not Plataea, is the decisive engagement in their version — and at Salamis Sparta’s contribution is minimal.
Herodotus IX.60–70 — the Spartan assault at Plataea (Perseus)

480 BCE

479 BCE

480 BCE · Athens, then Salamis

The Wooden Walls and the abandonment of Athens — the city is the people, not the stones key decision

Xerxes’ second invasion (480 BCE) presents Athens with an impossible choice: the Persian army will reach Attica before the Greek alliance can field a defensive force large enough to stop it. Themistocles, interpreting the Delphic oracle’s reference to “wooden walls” as meaning the fleet, persuades the Athenians to evacuate the city — women, children, and the elderly to Troizen and Salamis — and fight at sea. Athens is abandoned and burned by the Persians. This is the most radical act of the war: the city (the physical polis — the acropolis, the temples, the agora) is sacrificed to preserve the polis as a community of people. The stones are replaceable; the demos is not. The Athenians who row at Salamis are the poorest citizens, the thetes, who could not afford hoplite equipment. The naval victory of 480 BCE is a democratic victory in the most literal sense: the class excluded from hoplite warfare saves the city.
Herodotus VIII.41–44 — the Athenian evacuation (Perseus)

480 BCE · Salamis

Salamis — Athens’ victory and its political aftermath

The naval battle of Salamis (480 BCE) traps the Persian fleet in a narrow strait where numbers cannot tell. Themistocles’ deceptive letter to Xerxes — claiming the Greeks are about to scatter — lures the Persian ships into action before they are ready. The Athenians, rowing with the poor democratic class at the oars, destroy the Persian fleet. Xerxes watches from his throne on the shore. He withdraws the main army to Asia, leaving Mardonius with a land force for the following year’s campaign (defeated at Plataea). Salamis is the battle that most shapes the next fifty years of Athenian political life: if the poor thetes saved the polis, the poor thetes have a claim on the polis. The expansion of Athenian democracy after the Persian Wars is inseparable from the political consequences of the navy.
Herodotus VIII.84–96 — the battle of Salamis (Perseus)

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The Persian Wars — Greece and the key battle sites, 490–479 BCE

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The Persian Wars are fought on land and sea across a wide theatre. Marathon (490 BCE) is Athens’ first-invasion victory. Thermopylae and Salamis are simultaneous engagements of the second invasion (480 BCE); Plataea and Mycale are the follow-up land and sea victories of 479 BCE that complete the liberation. Sardis (burned in the Ionian Revolt, 498 BCE) is where the conflict originates.

490 BCE battle

480 BCE battle

479 BCE battle

Persian / Ionian context

Sparta

Two wars, two founding myths

The Persian Wars are won collectively, but each polis remembers a different victory. Athens remembers Salamis: a naval battle, fought by the poor democratic class, commanded by Athenian strategic genius (Themistocles), which decides the outcome. Sparta remembers Thermopylae and Plataea: land battles, fought by the Spartan hoplite, embodying self-sacrifice and obedience to the law. These are not merely different memories; they are incompatible narratives about which kind of virtue saves Greece and which kind of polis deserves to lead it. The fifty years between the Persian and Peloponnesian Wars are spent working out the consequences of that incompatibility.

Corinth

480–479 BCE · Corinth fights, and is forgotten. Corinth contributes forty ships at Salamis — the second-largest Greek contingent after Athens — and holds a section of the line at Plataea. Corinthian hoplites fight and die. But the Persian Wars settle into a two-city narrative (Athens the naval saviour, Sparta the land guardian) that erases Corinth almost entirely from the founding myth. The Corinthians are aware of this. Their speech at the Spartan congress of 432 BCE, preserved by Thucydides (I.68–71), carries a detectable note of injured pride alongside the strategic argument: Corinth has done its share, Sparta has been too slow to act, and the result is Athenian dominance that threatens Corinthian commercial interests directly. Corinth pushes Sparta toward war in 432 BCE partly out of genuine strategic fear of Athens and partly out of resentment at being diplomatically invisible between the two great powers.

The Pentecontaetia — Empire, Resentment, and the Road to War 479 – 431 BCE

479–462 BCE · Sparta

Spartan withdrawal — and the earthquake that changes everything

In the immediate aftermath of the Persian Wars, Sparta is the acknowledged hegemon of the Greek alliance. Pausanias, the Spartan general who won at Plataea, briefly attempts to extend Spartan power into the Aegean — but his high-handed behaviour alienates the Ionian Greeks, he is recalled and eventually tried, and Sparta quietly withdraws from Aegean leadership, ceding it to Athens. This suits Sparta’s structural interests: the permanent Helot threat makes prolonged absence dangerous. The decision proves costly. In 464 BCE a catastrophic earthquake strikes Sparta; the Helots rise in full revolt (Third Messenian War). Sparta asks its Peloponnesian League allies, including Athens, for help with the siege of Ithome. Athens sends four thousand hoplites under Cimon. The Spartans then dismiss the Athenian force — fearing, Thucydides says, their boldness and their democratic ideas. The insult is the proximate cause of the political rupture between the two cities.

446–431 BCE · Sparta and allies

Spartan fear and the “truest cause” of the war Thucydides’ analysis

Thucydides opens his account of the origins of the Peloponnesian War with one of the most discussed sentences in ancient historiography: the truest cause of the war (alethestaten prophasin) is not the specific disputes (Corcyra, Potidaea, the Megarian decree) that are cited in the diplomatic record — it is that Athenian power was growing and Sparta was afraid. This is a structural rather than a narrative explanation: Thucydides argues that the war is a consequence of the bipolar power structure of the Greek world, not of the decisions of particular individuals or the legitimacy of particular grievances. The Corinthians, at the Spartan congress of 432 BCE, articulate the contrast that drives Spartan fear: Athens is innovative, energetic, and imperial; Sparta is conservative, slow, and cautious. What the Corinthians say in praise of Athens is what Sparta hears as a threat.
Thucydides I.23 — the truest cause of the war (Perseus)

479–462 BCE

454 BCE

431 BCE

478–454 BCE · Athens and the Aegean

The Delian League becomes an Athenian empire empire

The Delian League is founded (478 BCE) as a defensive alliance against Persia, with a common treasury on the sacred island of Delos and contributions from member states in ships or money. Athens commands the allied fleet. Within a generation the alliance has transformed into an empire: member states that attempt to leave are forced back in by Athenian military force (Naxos, c. 470 BCE; Thasos, 465 BCE). In 454 BCE the treasury is moved from Delos to Athens — officially for security reasons, actually for control. Athens uses tribute money to fund the Parthenon and the Propylaea: the allies pay for the monuments of Athenian civic pride. This is not a secret; it is a provocation. The allied tribute quota lists, inscribed in stone and displayed publicly in Athens, are the accounts of an empire. Pericles defends the practice explicitly: Athens provides security; Athens deserves its profits.
Attic Inscriptions Online — IG I³ 259 (454/3 BCE) — first Athenian tribute quota

461–429 BCE · Athens

Pericles and Athenian democracy at its height — and its contradictions

The period of Periclean dominance (c. 461–429 BCE) represents both the fullest expression of Athenian democracy and its deepest contradictions. Ephialtes’ reforms (461 BCE) strip the Areopagus of its conservative political functions; Pericles’ citizenship law (451 BCE) restricts Athenian citizenship to those with two Athenian parents, sharply limiting the city’s openness just as its empire expands. The jury courts (paid by the state from 450s BCE) extend genuine political participation to the poorest citizens — but the same funds come from allied tribute. Athenian democracy is the most participatory institution in the ancient world; it is also the political system of an imperial power. The Funeral Oration, Pericles’ celebration of Athenian civic values delivered over the first year’s war dead (431/430 BCE), is a masterwork of political rhetoric — and studiously silent about the empire that funds the democracy it praises.
Thucydides II.35–46 — Pericles’ Funeral Oration (Perseus)

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The Athenian Empire — Delian League tribute-paying poleis, c. 450 BCE

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By c. 450 BCE the Delian League has become an Athenian empire of roughly 200 tribute-paying poleis organised into five tribute districts: Ionia, Hellespont, Thrace, Caria, and Islands. Athens controls the sea lanes connecting them all. The treasury is at Athens; the building programme funded by tribute is visible on the Acropolis. The empire spans from Byzantium in the north-east to the Aegean islands and the Ionian coast.

Athens

Key League members (tribute-paying)

Delos (original treasury)

Sparta (outside League)

Corinth, Corcyra, Potidaea (flashpoints)

Corinth

479–431 BCE · Squeezed on both sides. The Pentecontaetia (the fifty years between the wars) is a period of growing anxiety for Corinth. Athens’ expanding naval empire threatens Corinth’s western trade routes and its colonial relationships: Corcyra, Corinth’s own colony and a naval power in the northwest, maintains a policy of hostility toward its mother city. When Athens concludes a defensive alliance with Corcyra in 433 BCE (over Corinthian objections), Corinth takes it as a direct act of aggression. Simultaneously, Athens’ interference in Potidaea — a Corinthian colony in the north Aegean that pays tribute to Athens but still receives annual magistrates from Corinth — provides the second of the three immediate causes of war that Thucydides identifies. Corinth is not simply a bystander who pushes Sparta to act; it is a city whose specific commercial and colonial interests are being steadily eroded by Athenian expansion, and which sees war as the only corrective.

Thucydides — The First Political Historian c. 460 – 400 BCE

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Thucydides of Athens (c. 460–400 BCE) is the writer who changes what history is for. His predecessors — including the great ethnographer of the Persian Wars — wrote to record, to entertain, and to explain the designs of the gods or the patterns of fate in human affairs. Thucydides writes to be useful. His subject is power: how states acquire it, how they use it, how they lose it, and what principles govern its behaviour across time and circumstance. His method is rigorous: he rejects tradition and unverified report, insists on eyewitness evidence where possible, and reconstructs speeches not as they were delivered but as they should have been in the circumstances. His prose is notoriously difficult — compressed, dense, and demanding — because the world it describes is genuinely difficult. He is exiled by Athens in 424 BCE for failing to prevent the Spartan capture of Amphipolis; he spends twenty years in Thrace, able to gather information from both sides. The exile is, intellectually, a gift.

The World of Thucydides — map showing Greece, the Aegean, Sicily, and Asia Minor with key sites from the Peloponnesian War — The World of Thucydides. A reference map for the sites and regions named in the *History of the Peloponnesian War*.

Carried forward from an earlier discussion · Herodotus and Thucydides compared

	Herodotus (c. 484–425 BCE)	Thucydides (c. 460–400 BCE)
Causation	Divine and human — the hybris-nemesis pattern; gods punish excess. History is theologically legible.	Human only — power, fear, and self-interest. No gods intervene. History is politically legible.
Method	Travel, oral testimony, autopsy (opsis); multiple sources cited with disagreements acknowledged. Uncertainty embraced.	Documentary evidence, eyewitness priority, speeches reconstructed from memory. Precision over breadth.
Scope	Universal — all peoples, all customs, the entire known world from Scythia to Egypt. Marvels preserved.	Particular — one war, Greek political elites, power relations. No ethnography; marvels excluded.
Wonder	Thaumata — the marvellous preserved as a category of historical value. Wonder is epistemically legitimate.	Previous writers wrote for the hearing of the moment; marvels distort. Herodotus implicitly dismissed.
Justice	The world is governed by dike; imperial overreach is punished. Nomos is king of all.	“The strong do what they can; the weak suffer what they must” (Melian Dialogue). Justice is not operative.
Aim	Preservation of memory; explanation of origins; the thauma (wonder) as an end in itself.	A ktema es aei — possession for all time; useful knowledge of permanent human nature under power.
Legacy	Ethnography; cultural history; acknowledgement of debt to the non-Greek world; the ethics of comparison.	Political history; international relations theory; realism; the study of power without illusion.

c. 400 BCE · The History of the Peloponnesian War

The Methodological Preface — what Thucydides rejects ★ method

Thucydides I.20–22 is one of the most consequential passages in the history of historical writing. He identifies two errors his predecessors make: they rely on the logographoi (prose writers) who value attractive presentation over accuracy, and they rely on poets who embellish. He gives a specific example: most Athenians believe that the Pisistratid tyrants were deposed by Harmodios and Aristogeiton in a blow for freedom — but the assassination was actually about a personal love quarrel, and Hippias (not Hipparchus) was the ruling tyrant. The popular memory is wrong on the facts. Thucydides’ corrective is evidence: he will use eyewitness testimony where possible, cross-check accounts, and excise the legendary. What he will not do is write for entertainment: his work is a “possession for all time,” not “a prize essay for immediate hearing.” The implicit contrast with a more popular approach to the same material is unmistakeable to anyone who has read the earlier tradition.
Thucydides I.20–23 — the Methodological Preface (Perseus)

c. 400 BCE · History, Book I (The Archaeology)

The Archaeology — making the past smaller to make the present larger

Before narrating the war, Thucydides sketches Greek history from the earliest times to the Persian Wars (I.2–19, “The Archaeology”). His method is revealing: he reconstructs the poverty and instability of early Greece from indirect evidence (small buildings, absence of fortifications, political instability). His conclusion is that the Peloponnesian War is the greatest disturbance in history. But he establishes this by demonstrating that the Trojan War — the supposed pinnacle of earlier Greek power — was actually a small affair by any objective measure: the fleet was modest, the army had to farm as well as fight, the total effort was limited. The Archaeology is an exercise in demystification: it uses empirical argument to reduce the heroic past to manageable scale, making the present conflict recognisably the largest thing that has yet happened. The method is the argument.

460–424 BCE

430 BCE

416 BCE

430 BCE · Athens

The Plague — when the nomoi collapse key text

The plague that strikes Athens in 430 BCE (probably typhoid fever, though the diagnosis remains disputed) kills perhaps a quarter of the population, including Pericles. Thucydides himself contracts it and survives. His description (II.47–54) is the earliest attempt at clinical medical reporting in historical writing — precise, systematic, stripped of divine causation. But what Thucydides finds most significant is not the medical phenomenon but the social one: the plague destroys the nomoi of the city. Sacred and profane become confused; burial customs — the most fundamental rituals that mark the boundary between human and animal existence — are abandoned; bodies are thrown on strangers’ pyres. People behave as though they have no tomorrow, spending freely and abandoning the laws because no one expects to live to face punishment. The city that Pericles has just described as a model of orderly civic life is, within months, a scene of social dissolution. Thucydides does not editorialize; he does not say the gods sent the plague as punishment. He simply describes what happened to a society when its customs stopped working. The contrast with the Funeral Oration two chapters earlier is not accidental.
Thucydides II.47–54 — the Athenian plague (Perseus)

416 BCE · Melos

The Melian Dialogue — justice, power, and the silence of the gods key text

Melos is a small, neutral island with Spartan colonial connections that has refused to join the Athenian empire. In 416 BCE Athens sends an ultimatum: join or be destroyed. Thucydides presents the negotiation as a dialogue between Athenian envoys and Melian councillors (V.84–116). The Athenians argue: the strong do what they can; the weak suffer what they must; justice has no force between unequal parties; self-preservation is the only rational principle. The Melians argue: justice matters; the gods favour the just; Sparta will help. The Athenians reply: the gods operate on the same principle of the stronger ruling the weaker — it is the universal law of nature. Melos refuses to submit. Athens kills the men, enslaves the women and children, and colonises the island. The dialogue is not a record of an actual conversation — it is a philosophical construction. But the outcome is a historical fact. Thucydides writes it as though justice has nothing to say about what happened at Melos. That silence is the most disturbing thing in the text.
Thucydides V.84–116 — the Melian Dialogue (Perseus)

“The absence of the fabulous from my account will perhaps make it less attractive to listen to; but it will be enough for me if it is judged useful by those who wish to understand clearly the events which happened in the past and which (human nature being what it is) will, at some time or other and in much the same ways, be repeated in the future. My work is not a prize essay composed for immediate hearing, but a possession for all time.”

Thucydides, History of the Peloponnesian War I.22 — the ktema es aei (“possession for all time”) statement

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Course theme: Two approaches to the same past — and what each one can see The contrast between Thucydides’ method and the tradition he is rejecting runs through this discussion without being made explicit in the text. Thucydides insists on human causation — power, fear, and interest — where others invoke divine will or patterns of fate. He reports what he can verify; he acknowledges uncertainty rather than filling it with story. His Plague narrative refuses to assign blame to gods or moral failures; it simply describes social dissolution. His Melian Dialogue refuses to condemn or justify the Athenian action; it presents both arguments and shows the outcome. These silences are not evasions. They are the shape of his argument: power operates on its own logic, and appeals to divine justice are among the weak’s last resources. Whether that argument is true, or whether it is merely the most influential rationalisation of imperial behaviour in Western history, is the question this course will keep returning to.

The Peloponnesian War — Catastrophe and Its Lessons 431 – 404 BCE

431–404 BCE · The war broadly

Two strategies, two theories of victory — and why neither works as planned

Pericles’ strategy is attrition: Athens will not fight Sparta on land (where Sparta is overwhelmingly superior) but will use its naval mastery to raid the Peloponnesian coast, maintain its empire, and wait for Sparta to exhaust itself. Sparta’s strategy is the annual ravaging of Attica, forcing the Athenians behind their walls and cutting them off from their agricultural land. Both strategies depend on assumptions that prove false. Athens’ depends on Pericles’ continued political dominance (he dies of plague in 429 BCE) and on the plague’s failure to materialise (it materialises). Sparta’s depends on Athens eventually breaking under the strain of watching its land destroyed (it does not break, initially). The war drags on because neither side can deliver the decisive blow its strategy requires, and because the political systems of both cities generate internal opposition to any strategy that requires patience.

427 BCE · Mytilene · 416 BCE · Melos

Stasis — civil war as the war’s real consequence

Thucydides’ account of the civil war at Corcyra (427 BCE, III.82–83) is the most important passage in the History for understanding what the war does to Greek political life. Stasis (internal faction war) breaks out in city after city: the oligarchs call in Sparta, the democrats call in Athens, and the local conflict becomes a proxy war between the two great powers. Thucydides describes how language itself degrades under stasis: reckless boldness is called loyal courage; prudent hesitation is called cowardice disguised as caution. The moral vocabulary of Greek political life — the very categories that define the good citizen — is inverted and weaponised. The war is not merely destroying cities; it is destroying the conceptual framework within which the polis defines itself. This passage is the direct counterpart to the Funeral Oration: where Pericles describes the polis at its best, the Corcyra digression describes the polis at its worst — and both are Athens, separated by two chapters and five years.
Thucydides III.82–83 — stasis at Corcyra; the pathology of civil war (Perseus)

405–404 BCE · Sparta & Persia

Sparta wins — with Persian money

Sparta’s ultimate victory is achieved not by its hoplite army but by its navy — built with Persian money. Lysander, the Spartan commander, cultivates a relationship with Cyrus the Younger (the Persian prince who controls the satrapy of western Asia Minor) and uses Persian silver to build a fleet capable of challenging Athens at sea. The decisive engagement is Aegospotami (405 BCE): the Athenian fleet is caught beached and crewless; Lysander destroys it in an afternoon. Athens is besieged, starved, and forced to surrender in 404 BCE. The Long Walls (connecting Athens to Piraeus) are torn down to the music of flutes. The democracy is replaced, briefly, by the Thirty Tyrants — an oligarchy installed by Lysander. The irony is inescapable: the freedom of Greece from Persia, won at Marathon, Salamis, and Plataea, ends with Sparta borrowing Persian money to defeat the city that most embodied that freedom.

431–421 BCE

415–413 BCE

404 BCE

415–413 BCE · Sicily

The Sicilian Expedition — democratic hubris and strategic catastrophe turning point

The Sicilian Expedition (415–413 BCE) is the defining event of Athenian imperial overreach. The assembly votes to send a massive armada (134 triremes, c. 27,000 men) to attack Syracuse — the largest Greek city in the west — on the basis of strategic arguments that few Athenians understood and intelligence that was systematically optimistic. Thucydides notes that most Athenians had no idea how large Sicily was. The general Nicias opposes the expedition but is kept in command by an assembly that trusts him precisely because he opposes it (the logic of democratic accountability producing its own trap). The brilliant but untrustworthy Alcibiades, who argues for the expedition, is recalled mid-campaign on a charge of religious impiety and defects to Sparta. The expedition ends in total destruction: both relief fleets are defeated; the surviving army retreats overland and is annihilated; almost the entire force is lost. Athens loses perhaps 200 triremes and their crews. It is the greatest military catastrophe in Greek history to that date.
Thucydides VII.87 — the destruction of the Athenian army in Sicily (Perseus)

411–403 BCE · Athens

Oligarchic revolution and restoration — democracy survives, but changed

Athens’ response to the Sicilian catastrophe is a crisis of democratic nerve: in 411 BCE a coup installs the oligarchy of the Four Hundred, which claims to be pursuing peace negotiations. The fleet at Samos, however, refuses to recognise the coup, constitutes itself as the demos, and continues the war. The Four Hundred collapse within months; the more moderate Five Thousand briefly govern; full democracy is restored. In 404 BCE, after the final defeat, the Thirty Tyrants repeat the pattern. In both cases, Athenian democracy is restored by force, by people who consider it worth fighting for. The institutional resilience of Cleisthenic democracy — the deme system, the jury courts, the popular assembly — proves more durable than either its enemies or its critics expect. Athens will rebuild its fleet, re-establish its empire (partially), and continue as a major cultural and intellectual centre for another century. The defeat of 404 BCE is not the end of Athens; it is the end of Athens’ imperial moment.

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What the war proves — and what it does not. The Peloponnesian War ends with a Spartan military victory and leaves both cities profoundly weakened. Sparta’s hegemony lasts barely thirty years: defeat by Thebes at Leuctra (371 BCE) and the liberation of Messenia destroy the Spartan system at its foundation. The Helots are freed; without Helot labour, there are no Spartan citizens; without Spartan citizens, there is no Sparta. Athens recovers, rebuilds a second naval league, and remains the cultural capital of the Greek world. But neither city is ever again what it was in the fifth century. The question Thucydides asks in the History — whether power or justice governs history — is answered, structurally, by neither power nor justice but by Macedon: within a century of the Peloponnesian War, Philip II has done to Athens and Sparta what Athens and Sparta did to Melos and Mytilene.

Corinth

404–371 BCE · Corinth turns on Sparta. The outcome of the Peloponnesian War is, for Corinth, a disappointment that quickly becomes a grievance. Corinth expected the dismemberment of the Athenian empire to open western trade routes and restore Corinthian commercial primacy; what it gets instead is Spartan hegemony over all of Greece, indistinguishable in practice from Athenian hegemony. The Corinthian War (395–387 BCE) is the remarkable result: Corinth, Argos, Thebes, and Athens — cities that spent the previous thirty years fighting each other — form an alliance against Sparta, partly funded by Persia. Corinth fights alongside Athens against the Spartan system it had helped to create. The war ends inconclusively with the King’s Peace (387 BCE), which restores Persian sovereignty over the Ionian Greeks and confirms that no Greek polis is capable of sustained hegemony over the others. Corinth’s trajectory across the fifth and fourth centuries is a parable about the costs of being strategically indispensable: it is never powerful enough to set the terms, always important enough to be drawn into other people’s wars.

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