History of the Peloponnesian War
Thucydides
Thucydides, Vol. 1-4. Smith, Charles Foster, translator. London and Cambridge, MA: Heinemann and Harvard University Press, 1919-1923.
But the people, becoming aware of their design, disclosed it to Leon and Diomedon, two of the generals—for these submitted to the oligarchy unwillingly, because they held their office by the choice of the popular party—and also to Thrasybulus and Thrasyllus, the former of whom was a trierarch and the latter a hoplite, as well as to others who were reputed to be always foremost in opposition to the conspirators; and they begged these not to look on and see them destroyed and Samos alienated from the Athenians, the island to which alone it was due that the empire had held together up to this point.
These men, on hearing their plea, went to the soldiers one by one and besought them not to permit this thing, and especially to the men of the Paralus,[*](For this state ship, see note at 3.33.1.) those who sailed on the Paralus being Athenians and free men one and all and always opposed to an oligarchy even before it came; and Leon and Diomedon, whenever they sailed to any other place, used to leave the Samians some ships as a guard.
Consequently, when the three hundred attacked them, all these, and especially the crew of the Paralus, joined in the defence, so that the popular party in Samos prevailed. And they put to death of the three hundred some thirty who were chiefly responsible for the plot, and three they punished with banishment; as for the rest, they declared an amnesty, and enjoying a democratic government lived together henceforth as fellow-citizens.