“Once,” says the old man to the animals, “a hunter lived in this forest. Your grandparents lived in fear of him. The twang of his bow sent them running. Then something happened to change that forever . . . ” In this ancient parable from India, a forest-dwelling hunter learns that cruelty has consequences and that compassion has rewards. When the hunter meets the wise man Narada, “Do unto others as they would do unto you” takes on a very concrete meaning as the sage leads the hunter on an i...