" In economics, “The Marxist model seems better to me than the Monetarist model” states a fact (about the nervous system of the speaker, if I must make the obvious even more obvious.) “Marx is true and the Monetarists are refuted” states an opinion disguised as a fact. The former encourages intelligent discussion; the latter virtually incites emotional conflict. "

― Robert Anton Wilson , Cosmic Trigger 3: My Life After Death