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Primary sourceBook5th century BCE

History of the Peloponnesian War

Thucydides · 5th century BCE

Thucydides' contemporary account of the war with Sparta, including his record of Pericles' strategy, speeches and death.

Thucydides' history is the key contemporary source for Pericles' speeches, strategy and death.

Facsimile page of Greek manuscript handwriting in minuscule script, nine lines of dark ink on white, headed 'Facsimile No. 57', with a transcription and caption 'Thucydides.—Tenth Century' below.
Tenth-century manuscript of Thucydides' History of the Peloponnesian War. Biblioteca Medicea Laurenziana, Plut.69.2.

About this source

What it is

This is a history of the Peloponnesian War written by Thucydides, an Athenian who served as a general during the conflict. It is unfinished, ending mid-sentence, and survives through later manuscripts such as a tenth-century copy.

Why it matters

Thucydides gives the fullest contemporary account of Pericles' leadership, including his famous funeral oration and his judgment that Athens was, in practice, ruled by one leading citizen rather than purely by the people. Scholars debate how objective Thucydides really was, since he was an Athenian and a participant, but his work remains central to how we understand Pericles and Athenian democracy.

Look closer

  • Why might an eyewitness historian still have biases?
  • What does Thucydides' claim that Athens was 'in fact rule by the first citizen' suggest about Pericles' power?
  • How does the work being unfinished affect what we know about the war's end?

This book is part of the curated material that grounds the AI version of Pericles on Humy.ai — when students ask about related events, the AI can quote it and cite it.

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