'The simplest objection to Kant's Critical project – the claim that reason cannot critique itself – is one that Kant himself not only anticipated but largely answered. Moller shows how Kant's extensive legal metaphors throughout the Critique of Pure Reason form a coherent whole intended to explain the basis of reason's self-critique. She provides the best explanation yet of how Kant defended his critical project, one that also reveals Kant's deep understanding of natural law theory.' Frederick Rauscher, Michigan State University