Besides, I know the Athenian character from experience: you like to be told pleasant news, but if things do not turn out in the way you have been led… - Thucydides

At times Thucydides may be clearly mistaken in both detail and interpretation, but the extent of his accuracy and analysis astounds in a world where travel was difficult, written sources rarely available, and the physical obstacles to the writing of history substantial.

The Spartans meanwhile, man to man, and with their war songs in the ranks, exhorted each brave comrade to remember what he had learned before; well aware that the long training of action was of more use for saving lives than any brief verbal exhortation, though ever so well delivered.

When they (Lacedaemonians) had retreated, the Athenians posted guards to keep watch both by land and sea, a precaution which they maintained throughout the war. They then passed a decree reserving of the treasure in the Acropolis a thousand talents: this sum was set apart and was not to be expended unless the enemy attacked the city with a fleet and they had to defend it. In any other case, he who brought forward or put to the vote a proposal to touch the money was to be punished with death.

They also resolved to set apart yearly a hundred triremes, the finest of the year, and to appoint trierarchs for them; these they were only to use at the same time with the money, and in the same emergency.

(Book 2 Chapter 24)