The worst-tempered people I've ever met were people who knew they were wrong.
Holding on to anger is like
Holding on to anger is like grasping a hot coal with the intent of throwing it at someone else; you are the one who gets burned.
More Angry SMS
An angry man is again angry with himself when he returns to reason.
One should not lose one's temper unless one is certain of getting more and more angry to the end.