Aesop had a fable about two eagles, one envious of the other because the other could soar higher and more elegantly than he could. So the envious eagle would pluck his strongest feathers from his own body and shoot them as arrows, trying to wound or kill the other eagle. It was his own undoing, however. He could not hit the high flying eagle, and he was eventually grounded by his lack of feathers. Envy destroyed the eagle.