"All Hellenistic schools seem to define [wisdom] in approxima..." — Pierre Hadot quote meaning

All Hellenistic schools seem to define [wisdom] in approximately the same terms: first and foremost, as a state of perfect peace of mind. From this viewpoint, philosophy appears as a remedy for human worries, anguish, and misery brought about, for the Cynics, by social constraints and conventions; for the Epicureans, by the quest for false pleasures; for the Stoics, by the pursuit of pleasure and egoistic self-interest; and for the Skeptics, by false opinions. Whether or not they laid claim to the Socratic heritage, all Hellenistic philosophers agreed with Socrates that human beings are plunged in misery, anguish, and evil because they exist in ignorance. Evil is to be found not within things, but in the value judgments with people bring to bear