History of the Peloponnesian War

But Alcibiades, when he learned that Tissaphernes as well was on his way to Aspendus, sailed thither himself with thirteen ships, promising the army at Samos a sure and great benefit; for he would either secure the ships himself for the Athenians, or else at any rate prevent their joining the Peloponnesians. It is likely that he had long been aware of the purpose of Tissaphernes —that he had no intention of bringing the ships— and wished to prejudice him as much as possible in the eyes of the Peloponnesians on the score of his friendship for himself and the Athenians, that so he might be under greater compulsion to join the Athenian side. So he put to sea, laying his course eastward, straight toward Phaselis and Caunus.