Abstract
The ‘dualist project’ in the philosophy of punishment is to show how retributivist and reductivist (utilitarian) considerations can be combined to provide an adequate justification of punishment. Three types of dualist theories can be distinguished—‘split‐level’, ‘integrated’ and ‘mere conjunction’. Split‐level theories (e.g. Hart, Rawls) must be rejected, as they relegate retributivist considerations to a lesser role. An attempted integrated theory is put forward, appealing to the reductivist means of deterrence. However, it cannot explain how the two types of considerations, retributivist and reductivist, are to be genuinely integrated as opposed to merely conjoined. An attempt to find integration at the deeper level of political philosophy is then examined, in the form of Lacey's communitarian theory of punishment. In the end, mere conjunction dualism must be accepted by default. This conclusion points to a deep‐lying schizophrenia in our substantive criminal law. Although developing this theme is beyond its scope, the paper ends by saying a little on how a mere conjunction dualist theory of punishment leads on to a similar theory of criminalization