Despite an initial appearance of superior doctrinal fit, restitution is not an appropriate vehicle for reparations claims based on slavery and similar large-scale historical injustices. The justifying principle behind restitution—prevention of unjust enrichment—lacks the moral force necessary to resolve a controversial public dispute about moral rights and obligations among segments of society. At its core, a claim to restitution is an attempt to right a wrong not by alleviating the adverse consequences to oneself, but by diminishing the position of others. In other words, the notion of unjust enrichment is a comparative idea that draws on resentment and the desire for retaliation, rather than the desire to be made whole. Retaliatory impuls...