Control thy passions lest they take vengence on thee. ~ Epictetus - Epictetus

when we love, hate or fear such things, then the people who administer them are bound to become our masters.

Because of this connection, some of us sink to the level of wolves – faithless, vicious and treacherous. Others turn into lions – wild, savage and uncivilized. But most of us become like foxes, the sorriest of the lot. [8] For what else is a spiteful, malicious man except a fox, or something even lower and less dignified? [9] See that you don’t turn out like one of those unfortunates. I 4 On progress [1]

When you do anything from a clear judgment that it ought to be done, never shun the being seen to do it, even though the world should make a wrong supposition about it; for, if you don’t act right, shun the action itself; but, if you do, why are you afraid of those who censure you wrongly?