History of the Peloponnesian War
Thucydides
Thucydides. The history of the Peloponnesian War, Volume 1-2. Dale, Henry, translator. London: Heinemann and Henry G. Bohn, 1851-1852.
Wherefore advise well, and strive to be the first to give liberty to the Greeks, and to lay up for yourselves everlasting glory; and both to avoid suffering in your private capacities, and to confer on your whole city the most honourable title.
To this effect spoke Brasidas. The Acanthians, after much previous speaking on both sides of the question, gave their votes upon it in secret; and because Brasidas had urged alluring arguments, and at the same time through fear for their fruit, the majority determined to revolt from the Athenians; and after pledging him to the oaths which the Lacedaemonian authorities swore before they sent him out, that such as he won over should assuredly be independent allies, in this way they admitted the army.
Not long after, Stagirus, a colony of the Andrians, also joined them in revolt. Such then were the events of this summer.