The title is a reference to a Native American parable -- the story exists in various forms. It's a story that has found significant resonance, particularly lately. Here it is:
The Wolf You Feed
An elder Native American was teaching his grandchildren about life. He said to them, "A fight is going on inside me.. it is a terrible fight and it is between two wolves. One wolf represents fear, anger, envy, sorrow, regret, greed, arrogance, self-pity, guilt, resentment, inferiority, lies, false pride, superiority, and ego.
The other stands for joy, peace, love, hope, sharing, serenity, humility, kindness, benevolence, friendship, empathy, generosity, truth, compassion, and faith."
"This same fight is going on inside you, and inside every other person, too", he added.
The Grandchildren thought about it for a minute and then one child asked his grandfather, "Which wolf will win?"
The old Cherokee simply replied... "The one you feed."
It's the first thing I thought of when I came across the Eugene Robinson piece Feeding the Lone Wolves (hat-tip Peter1a). Read the piece -- it's well worth it -- but here's a key excerpt: