For that which is good by nature, we have said, is for the virtuous man good and pleasant in itself. Now life is defined in the case of animals by the power of perception in that of man by the power of perception or thought;
Bestalde, modu naturalago batez zorrotzago aztertzen badugu, badirudi adiskide bertutetsua gizaki bertutetsuarentzat berez nahigarria dela, (15) esan baitugu berez ona den gizakia, gizaki bertutetsuarentzat ona eta atsegina dela harengatik berarengatik.