You will not be punished for your anger...

You will not be punished for your anger, you will be punished by your anger.

In a controversy the instant we feel anger...

In a controversy the instant we feel anger we have already ceased striving for the truth, and have begun striving for ourselves.

Holding on to anger...

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.