To these concrete five might be added a vaguer sixth, having to do with maintaining a chemical purity in the reaction between product and appraiser. Do not accept for review a book you are predisposed to dislike, or committed by friendship to like. Do not imagine yourself a caretaker of any tradition, an enforcer of any party standards, a warrior in an idealogical battle, a corrections officer of any kind. Never, never (John Aldridge, Norman Podhoretz) try to put the author "in his place," making him a pawn in a contest with other reviewers. Review the book, not the reputation. Submit to whatever spell, weak or strong, is being cast. Better to praise and share than blame and ban. The communion between reviewer and his public is based upon the presumption of certain possible joys in reading, and all our discriminations should curve toward that end."