Not all deceptions are palatable. Untruths are too easy to come by, too quickly exploded, too cheap and ephemeral to give lasting comfort. Mundus vult decipi, but there is a hierarchy of deceptions.Near the bottom of the ladder is journalism: a steady stream of irresponsible distortions that most people find refreshing although on the morning after, or at least within a week, it will be stale and flat.On a higher level we find fictions that men eagerly believe, regardless of the evidence, because they gratify some wish.Near the top of the ladder we encounter curious mixtures of untruth and truth that exert a lasting fascination on the intellectual community.