Followers of this belief system commemorated two founders on the holiday of Eikas on the twentieth day of every month. In Naples, a circle of adherents to this belief system was led by Philodemus of Gadara, a client of Lucius (15[1])Calpurnius Piso. Gravestones of many members of this movement include the inscription “Non (15[1])fui, fui, non sum.” (-5[1])Every day, followers of this belief system recited the (*) tetrapharmakos, (10[1]-5[2])part of its “principal doctrines.” (10[1])The founder of (-5[1])this belief system (10[2])is praised for defeating the monster Religion (-5[1])in a poem that also discusses the clinamen, (10[1])or “swerve.” (10[4]-5[2])For 10 points, name this (10[1])materialistic ancient philosophy (10[2])expounded (10[1])in Lucretius’ (10[2])De Rerum Natura, which taught that the highest good was ataraxia, the absence of pain. (10[2])■END■ (10[3]0[1])