The second volume in Joel Feinberg's series , focuses on the "offense principle," which maintains that preventing shock, disgust, or revulsion is always a morally relevant reason for legal prohibitions. Feinberg clarifies the concept of an "offended mental state" and further contrasts the concept of offense with harm. He also considers the law of nuisance as a model for statutes creating "morals offenses," showing its inadequacy as a model for understanding "profound offenses," and discusses such issues as obscene words and social policy, pornography and the Constitution, and the differences between minor and profound offenses.