History of the Peloponnesian War

Alcibiades therefore urged him to wear them both out at first, and after docking the Athenian power as much as he could, forthwith to rid the country of the Peloponnesians.

In the main Tissaphernes approved of this policy, so far at least as could be conjectured from his behaviour; since he now gave his confidence to Alcibiades in recognition of his good advice, and kept the Peloponnesians short of money, and would not let them fight at sea, but ruined their cause by pretending that the Phoenician fleet would arrive, and that they would thus be enabled to contend with the odds in their favour, and so made their navy lose its efficiency, which had been very remarkable, and generally betrayed a coolness in the war that was too plain to be mistaken.

Alcibiades gave this advice to Tissaphernes and the king, with whom he then was, not merely because he thought it really the best, but because he was studying means to effect his restoration to his country, well knowing that if he did not destroy it he might one day hope to persuade the Athenians to recall him, and thinking that his best chance of persuading them lay in letting them see that he possessed the favour of Tissaphernes.