 A striking feature of penal theorising during the last three decades of the twentieth century was a revival of positive retributivism — of the idea that the positive justification of punishment is to be found in its intrinsic character as a deserved response to crime (see H. Morris 1968; N. Morris 1974; Murphy 1973; von Hirsch 1976; two useful collections of contemporary papers on retributivism are White 2011 and Tonry 2012).