When I say "The good man gave his good dog a good meal," I use "good" analogically, for there is at the same time a similarity and a difference between a good man, a good dog, and a good meal. All three are desirable, but a good man is wise and moral, a good dog is tame and affectionate, and a good meal is tasty and nourishing. But a good man is not tasty and nourishing, except to a cannibal; a good dog is not wise and moral, except in cartoons, and a good meal is not tame and affectionate, unless it's alive as you eat it.