He says that Erginus attacked the Peiraeus on his own private account, and that when his scaling-ladder broke and the enemy were pursuing him, he kept calling upon Aratus by name, as if Aratus were there, and thus deceived and made his escape from them. But this defence does not seem to be convincing. For Erginus was a private man and a Syrian, and there is no likelihood that he would have conceived of so great an undertaking if he had not been under the guidance of Aratus and obtained from him the force and the fitting time for the attack.
Edition :
Plutarch. Plutarch's Lives. with an English Translation by. Bernadotte Perrin. Cambridge, MA. Harvard University Press. London. William Heinemann Ltd. 1926. 11.