These are ataraxia, first, the absence of anxiety, worry or inner distress and aponia, the absence of physical pain. Usener 2 hence claims that ‘freedom from trouble in the mind [ataraxia] and from pain in the body [aponia] are static pleasures.’
This passage provides the canonical Epicurean definition of ataraxia as the privative, stable pleasure of a mind free from distress, pairing it with aponia as the dual foundation of Epicurean happiness.
, Philosophy as a Way of Life: History, Dimensions, Directions, 2021thesis