He starts with his own name, and then with the war: «Θουκυδίδης Ἀθηναῖος ξυνέγραψε τὸν πόλεμον τῶν Πελοποννησίων καὶ Ἀθηναίων», “Thucydides, an Athenian, wrote the history of the war waged by the Peloponnesians and the Athenians against one another”. He began at the very outset, sure that it would be great and noteworthy above all the wars before it.1 Even the spelling is old-fashioned: ξυνέγραψε has the ξυν- that LSJ calls the old Attic form of σύν-.2
Thucydides tells you a good deal about himself. He caught the plague at Athens and recovered: “For I had the disease myself and saw others sick of it”.3 In the eighth year of the war he was one of the generals in Thrace. When Brasidas marched on Amphipolis, the city's defenders sent for Thucydides, who was at Thasos, half a day's sail away.45 He held the right to work gold mines in that part of Thrace and was influential among its leading men.6 His ships reached Eion on the evening Amphipolis fell, and saved Eion by a night.7 He was then banished from Athens for twenty years “after my command at Amphipolis”, and he says that exile gave him time to know “affairs on both sides”, especially the Peloponnesians'.8
Then comes how he worked. The speeches, he admits, could not be recalled word for word. They are given in the language which, “as it seemed to me”, each speaker would have used, sticking as closely as possible to the general sense of what was really said.9 He describes the plague's symptoms so that anyone could recognise it if it ever returned.3 He names “the truest explanation” of the war, “although it has been the least often advanced”: the growth of Athens, which frightened Sparta into fighting.10 And he says what he hopes for the book: not “a prize-essay to be heard for the moment, but … a possession for all time”, κτῆμα ἐς αἰεί.11
He lived to see the war end: he writes that it lasted twenty-seven years, until the Spartans took the Long Walls and the Piraeus.8 Yet the book stops in mid-story. Its last sentence is about Tissaphernes: “And so he came first to Ephesus and offered sacrifice to Artemis.”12 Xenophon's Hellenica begins as if in the next breath: “After this, not many days later, Thymochares came from Athens with a few ships”.13
Debated among scholars The ending is usually taken to mean the work was left unfinished.14 Simon Hornblower, in his commentary, defends some passages of Book 8 against the charge of incompleteness and suggests that Thucydides' narrative art was changing.15
A note on the books
Thucydides did not divide his work into eight books. The division is most likely the work of later librarians, probably in the Library of Alexandria.16