This quote is in complete harmony with the teachings of Buddha, though apparently a paraphrase of a quote by Buddhaghosa.
“Holding on to anger is like grasping a hot coal with the intent of harming another: you end up getting burned.”
Regardless of who said it, it illustrates a truth that all of us can see in our own lives, except when we are ‘intoxicated’ by anger. For some perverse reason, anger – like other toxins – can ‘taste’ so good and feel so satisfying. But when the crazed haze of anger dissipates, we are left in pain. Our joy is diminished by our focus upon anger and revenge. Our soul (or whatever you call that part of you that doesn’t appear on an x-ray) is clouded or flawed in ways which won’t allow us to fully appreciate the good in the world.
Let anger go and let joy flow.