Aristotle observed that eudaimonia is the highest good for human beings; that which distinguishes humans from animals is our "human essence". That is, we are a rational and social animal, so living a good human life means seeking to know and acting rightly — virtuously — with others. So, how does one become virtuous? Meden Agan (μηδὲν ἄγαν) - 'Nothing in excess’ — Inscription at the temple of Apollo at Delphi Aristotle believed ...