Abstract

In this chapter, I compare and contrast Kant’s and Sidgwick’s arguments in defense of moral cognition as objective practical knowledge. Kant focuses on practical truths in terms of practical laws governing the mind in action, while Sidgwick is concerned with practical truths about action. I argue that this is a crucial difference in the understanding of practical knowledge, which is matched by a different understanding of moral phenomenology and of the significance of subjective experience in accounting for the authority of moral obligations. Key to these differences is a more fundamental divergence regarding the nature of reflection, its dynamics, and its impact on agency