138). Yet the ethics of Stoicism teach that happiness can only be attained with certainty through inward peace and quietness of spirit (ata?a??a), and that this again can only be reached through virtue;
baita 138 or.ean ere). Hala ere, etika estoikoak irakasten du zoriona barneko bakean eta espirituaren lasaitasunean (---) bakarrik aurkitzen dela ziur eta hori berriz bertutearen bitartez bakarrik lortzen dela: