What is the highest good? To be a bit more precise, what is the highest good attainable by us though our own (individual or collective) efforts? One perennially attractive, if unambitious, answer is that of the Pyrrhonian skeptics: our highest good lies in ataraxia. The term connotes tranquillity, peace of mind, freedom from disturbance, unperturbedness. Other Hellenistic schools also identified the summum bonum with ataraxia, but let us confine ourselves to skepticism as represented by Sextus Empiricus.
The Pyrrhonian skeptic, then, seeks ataraxia as the summum bonum. This freedom from disturbance is supposed to be achieved by an epoché (ἐποχή) or suspension of doxastic commitments of a certain sort. One is supposed to achieve the happiness of tranquillity by suspending one's belief on a certain range of issues, those issues that typically cause contention, enmity, and bloodshed. Among these will be found philosophical, theological, and political issues. My elite readers can easily supply their own examples.