This one comes to us from Professors Gerald Hess of Gonzaga and Stephen Gerst from Phoenix School of Law. It can be found at 43 Val. U. L. Rev. 513 (2009). From the introduction:
An old story about life: A grandparent was teaching a grandchild about our inner lives. “A struggle is going on inside of me, you, and everyone else. It is a fight between two wolves. One wolf is anger, envy, regret, greed, guilt, lies, resentment, and superiority. The other wolf is joy, humility, love, kindness, generosity, truth, and compassion.” “But which wolf will win?” asked the grandchild. Answered the grandparent, “The one you feed.”