The jealousy and rivalry of Aratus and the Achaians had made them put themselves under the power of Macedon, in order thus to overthrow Sparta. Aratus seemed to have lost all his skill and spirit, for when the robber Ætolians again made an attack on the Peloponnesus, he managed so ill as to have a great defeat; and the Achaians were forced again to call for the help of the Macedonians, whose king was now Philip, son to Antigonus.