[[quoteright:250:https://static.tvtropes.org/pmwiki/pub/images/thucydides.jpg]]
[[caption-width-right:250:History is written by the victors...and also by this guy.]]

->''Right, as the world goes, is only in question between equals in power, while the strong do what they can and the weak suffer what they must.''

Thucydides was an ancient Greek historian. Unlike Herodotus, he was the first to use reasoning and logic exclusively, thus making him the first historian in a modern sense. He is famous for his work, ''[[UsefulNotes/ThePeloponnesianWar The History of the Peloponnesian War]]'' which chronicles the multi-decade breakdown of the unity of Hellas into warring city-states locked in CivilWar after their famous unity during the UsefulNotes/GrecoPersianWars.

Now this narrative is complicated because of several factors. Firstly, the narrative is incomplete. Secondly, Thucydides was himself a participant in the conflict. He was a naval commander who led a failed mission and was dismissed and exiled for his post. This of course colours his own writings and impression of the Athenian City-State and its fractious relationships with its generals and zealous exercise of civilian control over the military. The third reason is the language. Thucydides wrote his work in a highly unorthodox-for-his-time Greek that even ancients found hard to read. Most translations for the sake of readability tend to transcribe and transliterate it to make sense, which often results in sentences losing ambiguity, multiple meanings, and articulating more definite and clearer views than the original text allows. The fourth reason is that Thucydides to illustrate his point and meaning often resorted to the form of dialogues which means that occasionally, as in the famous "Melian Dialogue" or "Pericles' Funeral Oration", characters voice views and opinions that are probably not literal transcriptions but symbolic and representative of actual interactions and meanings.

As such, Thucydides might be a lot more naturalistic and less fantastic than Herodotus, but his history-writing is no less a creative endeavour, and quite far from our ideas of "history".

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!! Tropes
* AppealToForce / MightMakesRight: ''The Melian Dialogue'' provides one of the earliest case study for Realism in International Relations.
-->'''Athenians''': [...] right, as the world goes, is only in question between equals in power, while the strong do what they can and the weak suffer what they must".
* DemocracyIsFlawed: One traditional interpretation of Thucydides' writings has been that democracies need leaders, but that leadership itself can be fundamentally dangerous to democracy. This does not appear to be intended as a condemnation of democracy in and of itself, but a warning to the electorate of the need for vigilance.
* DontMakeMeDestroyYou: More or less what the Athenians ask the Melians, almost begging them in Thucydides' dialogue.
* KirkSummation: Pericles' Funeral Oration is seen by Thucydides as one for Pericles and for Athens. The city is the "School of Greece" and a model for freedom and experimentation for the world.
* LeftHanging: ''History of the Peloponnesian War'' abruptly ends mid-sentence, leaving the final six years of the war uncovered. It isn't known exactly why this happened, though most presume [[DiedDuringProduction that Thucydides died before he could continue it]].
* SuspiciouslyPrescientPlanning: Subverted in ''History of the Peloponnesian War''. The Athenian admiral Phrynichus, in order to save himself from being executed for espionage[[note]]He had previously communicated to the enemy Spartans that Alcibiades and the Persians were PlayingBothSides. Alcibiades found out and told the Athenians that Phrynichus was fraternizing with the enemy[[/note]], leaked info to the Spartans about how the Athenian fleet at Samos was undefended, then rushed to fortify Samos. When Alcibiades once again told the Athenians of the leak, Phrynichus argued that if he did intend to aid the Spartans, why would he hinder them by fortifying their target? Surprisingly, the Athenian leaders believed Phrynichus's argument and dismissed the charges against him.

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