The rules governing who will be punished and how much determine a society's success in two of its most fundamental functions: doing justice and protecting citizens from crime. Drawing from the existing theoretical literature and adding to it recent insights from the social sciences, Paul Robinson describes the nature of the practical challenge in setting rational punishment principles, how past efforts have failed, and the alternatives that have been tried. He ultimately proposes a principle for distributing criminal liability and punishment that will be most likely to do justice and control...