Full-text available at SSRN. See link in this record.This article critiques the Court's interpretation of the Eighth Amendment's Cruel and Unusual Punishment Clause and defends an alternative understanding. The Court's jurisprudence is plagued by deep inconsistencies concerning the text, the Court's own role, and a constitutional requirement of proportionate punishment. The Justices have said that a punishment is not "cruel" if it significantly advances any legitimate penological objective. It has also recognized that the separation of powers and federalism require that decisionmakers have leeway to make reasonable judgments on this score. Yet all of the punishments the Court has invalidated reasonably can be said to further utilitarian obj...