It is a fallacy to think that carping is the strongest form of criticism: the important work begins after the artist's mistakes have been pointed out, and the reviewer can't put it off indefinitely with sneers, although some neophytes might be tempted to try: "When in doubt, stick out your tongue" is a safe rule that never cost one any readers. But there's nothing strong about it, and it has nothing to do with the real business of criticism, which is to do justice to the best work of one's time, so that nothing gets lost.

"Program Notes," pp. xvi-xvii - Essays in Disguise (1990)