In his magnum opus, the Historical and Critical Dictionary, Pierre Bayle offered a series of brilliant criticisms of the major philosophical and theological systems of the 17th Century. Although officially skeptical concerning the attempt to provide a definitive account of the truths of metaphysics, there is reason to see Bayle as a reluctant skeptic. In particular, Todd Ryan contends that Bayle harbored deep sympathy for the attempt by Descartes...