Anger is a desire for evil toward the one who has caused hurt. Temper is an untimely inflammation of the heart. Displeasure is an unpleasant feeling nestling in the soul. Irritability is an accommodating inclination of character and an ugliness of the soul.
This is what John of the Ladder said. And yes, being angry is bad. Even very bad. Above all, for the one who gets angry. Did I know about it? Of course I did. But still I couldn’t do anything about it. If that fire would flare up in me, then woe to the one who had done the injustice. Woe. And for him awaited weeping and gnashing of teeth. Weeping and gnashing of teeth. Terrible words—so terrible they sent a chill over the skin…
A young man I didn’t know with a contemptuous smirk, who with such ease insulted a girl he didn’t even know—perhaps he deserved a serious talk, an explanation of what he was wrong about and why a normal, decent person can’t behave this way, why it’s low, why it’s disgusting and vile.