Anger is always concerned with individuals, ... whereas hatred is directed also against classes: we all hate any thief and any informer. Moreover, anger can be cured by time; but hatred cannot. The one aims at giving pain to its object, the other at doing him harm; the angry man wants his victim to feel; the hater does not mind whether they feel or not.
AristotleBut what is happiness? If we consider what the function of man is, we find that happiness is a virtuous activity of the soul.
Aristotle