Abstract
This work contains interesting criticisms of and rebuttals to opponents of rationalism. In addition it contains a bold, heady, imaginative positive account of pure reason. BonJour offers us a late-twentieth-century persuasive rationalist approach to a priori knowledge. As a preliminary to stating and defending his positive theory, the opening chapters offer criticisms of varieties of empiricism on a priori knowledge: of Moderate Empiricism—which allows for the a priori but attempts to demythologize it by grounding it in analyticity—and of Radical, that is, Quinian Empiricism—which denies or rather takes a skeptical stance towards the a priori.