The cities of Ionia worshipped the Spartan general Lysander, when he personally dominated Greece, immediately following the Peloponnesian War; according to Plutarch, this was the first instance of ruler cult in Greek history. There were similar instances of divine cult to humans in the same century, although some rulers, like Agesilaus, declined it. Clearchus, tyrant of Heraclea, dressed up like Zeus and claimed godhood; this did not stop the Heracleots from assassinating him. Isocrates said of Philip II of Macedon that after he conquered the Persian Empire, there would be nothing for him to attain but to become a god; the city of Amphipolis, and a private society at Athens, worshiped him even without this conquest; he himself set out his statue, dressed as a god, as the thirteenth of the Twelve Olympians.