After distinguishing different species of Legal Moralism I outline and defend a modest, positive Legal Moralism, according to which we have good reason to criminalize some type of conduct if it constitutes a public wrong. Some of the central elements of the argument will be: the need to remember that the criminal law is a political, not a moral practice, and therefore that in asking what kinds of conduct we have good reason to criminalize, we must begin not with the (...) entire realm of wrongdoing, but with conduct falling within the public realm of our civic life; the need to look at the different processes of criminalization, and to ask what kinds of consideration can properly figure in those processes; the need to attend to the relationship, and the essential differences, between criminal law and other modes of legal regulation. (shrink)