ataraxia (from Gr. a (not) and taraktos (disturbed) refers to unperturbedness, freedom from emotional and intellectual disturbance, tranquility of soul. Sextus Empiricus writes: “Scepticism has its arche, its inception and cause in the hope of attaining ataraxia, mental tranquillity.” The goal is not truth, but eudaimonia (contentment). The central means to ataraxia is the suspension (epoche) of beliefs. Not all beliefs, but only those that give rise to contention and strife.
We've learned lots of terms from the Gita: dharma, action/non-action, action as yajna, discipline, bhakti, infinite spirit. Then, from Stoic philosophy, ataraxia, aretê, etc. What are your thougts?