History of the Peloponnesian War

And they sent away Diotrephes to his charge, who was now about Chios, chosen to go governor of the cities upon Thrace. He, when he came to Thasos, deposed the people.

And within two months at most after he was gone, the Thasians fortified their city, as needing no longer an aristocracy with the Athenians but expecting liberty every day by the help of the Lacedaemonians. For there were also certain of them with the Peloponnesians driven out by the Athenians;

and these practised with such in the city as were for their purpose to receive galleys into it and to cause it to revolt. So that it fell out for them just as they would have it, and that estate of theirs was set up without their danger and that the people was deposed that would have withstood it.