Book 1, Chapter 3 — Congress of the Peloponnesian Confederacy at Lacedaemon
At Sparta's congress, ally after ally rises to accuse Athens — and Sparta must decide whether to believe them.
Summary
The Corinthian speech at the congress is the most rhetorically polished of the History's early exchanges. The Corinthians contrast Athenian dynamism with Spartan conservatism — Athens innovates, acts, never rests; Sparta deliberates, waits, trusts the present arrangements. The contrast is not flattery. The Corinthians are telling the Spartans that their habits, adequate for internal governance, are fatal in the face of an adversary constitutionally incapable of inaction. If Sparta does not act, Athens will have arranged things so that resistance becomes impossible. The speech is the classic statement of the argument that deterrence requires credible action, not merely credible threat.
The Athenian response, delivered by envoys who were present at Sparta on other business and spoke without official authorization, is more remarkable still. They do not deny Athenian power or ambition; they explain them. Empires are not assembled by accident or design but by the pressure of circumstances — fear, honor, interest, always in that combination. The Athenians who won the Persian Wars did not intend to build an empire; they found themselves with the fleet, the prestige, and the allies that produced one. To have refused the inheritance would have been not virtue but naivety. This is Thucydides's own political anthropology placed in the mouths of the Athenian envoys, and it remains one of the most candid statements of imperial logic ever written.
After the speeches, the Spartan king Archidamus counsels delay and preparation; the ephor Sthenelaidas demands an immediate vote for war. The assembly votes for war by acclamation rather than count, and Sthenelaidas maneuvers the vote by claiming he cannot distinguish the noise. Thucydides notes the irony without comment. The Spartans who prided themselves on slow, deliberate governance voted for the greatest war in history on a voice vote they were not sure they could read accurately.
- Book 1Book 1 opens not with battle but with argument.
- Book 1The immediate causes of the war begin with Epidamnus — a small colony on the Adriatic whose civil strife triggers a chain of interventions that pulls Corinth against Corcyra and Corcyra toward Athens.
- Book 1The congress at Lacedaemon is the Peloponnesian War's diplomatic overture.
- Book 1The Pentecontaetia — the fifty years between the Persian Wars and the outbreak of the Peloponnesian War — is Thucydides's compressed account of how Athens turned from war-leader to empire.
- Book 1Chapter 5 is the last diplomatic chapter before war breaks out.
- Book 2The war formally begins with the Theban attack on Plataea.
- Book 2The plague of Athens is the History's most famous sustained passage outside the Funeral Oration.
- Book 2Chapter 8 covers the third year of the war across multiple theatres.
- Book 3Book 3 opens with the revolt of Mytilene, the largest and most strategically significant of the Athenian allied cities.
- Book 3Two episodes in Book 3's second half illustrate what civil and inter-state war does to the norms that normally govern violence.
- Book 3Chapter 11 follows the Athenian general Demosthenes through a remarkable arc: from the catastrophic defeat in Aetolia, where he led light-armed Athenian troops into wooded hill country they were utterly unequipped to fight in and lost the greater part of them, to the brilliant campaign in Acarnania, where he used his knowledge of irregular warfare, learned at severe cost, to ambush and nearly annihilate a Peloponnesian and Ambraciot force.
- Book 4The Pylos campaign is the tactical and psychological turning point of the war's first decade.
- Book 4Chapter 13 moves across multiple theatres in the war's seventh and eighth years.
- Book 4Book 4's final chapter belongs to Brasidas — the one Spartan commander who combined military brilliance with political intelligence, the qualities Sparta as an institution consistently undervalued.
- Book 5The tenth year of the war produces one of history's more striking coincidences of elimination.
- Book 5The peace after Cleon and Brasidas is a peace in name only.
- Book 5The Melian Dialogue is ten pages in most editions and has been discussed for two and a half thousand years.
- Book 6Book 6 opens with the debate and vote on the Sicilian Expedition — one of the History's great scenes of collective irrationality.
- Book 6While the Athenian expedition crosses the sea, Syracuse holds its own debate about whether to believe the threat.
- Book 6With Alcibiades gone and Lamachus increasingly the operational commander, the Athenian force finally moves seriously against Syracuse in the expedition's second year.
- Book 7Book 7 opens with the Athenian position deteriorating on every front simultaneously.
- Book 7Demosthenes arrives with the reinforcements and immediately does what Nicias had been unable to do: he assesses the situation, decides on a bold stroke, and acts.
- Book 7Book 7's final chapters are the most sustained tragic narrative in classical literature.
- Book 8Book 8 opens with Athens after Sicily — a city that could not believe what it had done to itself, then could not stop the consequences.
- Book 8Chapter 25 covers one of the strangest episodes in Athenian history: the oligarchic revolution of 411 BCE, in which a conspiracy of four hundred men overthrows the Athenian democracy at the city's moment of maximum strategic vulnerability.
- Book 8The History's final chapter covers the collapse of the Four Hundred, the restoration of a modified democracy in Athens, the recall and rehabilitation of Alcibiades, and the Athenian naval victory at Cynossema — a victory that demonstrates Athens's ability to recover even now.