'With this lucid explanation and analysis of Kant's empirical psychology, Patrick R. Frierson makes a major contribution to Kant scholarship. Up till now, the general lack of familiarity with this aspect of Kant's philosophy has led many to conflate his moral theory and his empirical psychology, which in turn has produced many misguided objections and caricatures. Frierson's clear and balanced discussion enables readers to gain a deeper understanding of Kant's empirical account of human cognition and action, and to situate it properly in its broader philosophical context.' Pauline Kleingeld, Rijksuniversiteit Groningen, The Netherlands