What is the relationship of punishment theory to punishment practice? What should this relationship be? The last twenty years have seen an amazing rise in sophisticated and elegant theories of retributive justice of a Kantian, and more recently, an expressivist variety - a “retributivist revival.” As pure philosophical theorizing goes, this must surely be counted as real progress. But, those same twenty years have also seen increases in the length of criminal sentences, in the amount of activity subject to criminal sanction, and in the sheer number of people behind bars. Professor James Q. Whitman has famously said that we are now witnessing the rise of a uniquely American brand of “harsh justice” in the United States. It would seem natural...