This book presents points of agreement and disagreement in the writings of these two giants of philosophical ethics. The chapters will stimulate discussions among moral theorists and historians of philosophy by applying cutting-edge scholarship on each philosopher to shed light on some of the more perplexing arguments and views of the other, and by uncovering and examining points of agreement between Sidgwick and Kant as possible grounds for greater convergence in contemporary moral philosophy. This is the first full-length volume to investigate Sidgwick and Kant side by side. It will be of major interest to researchers and advanced students working in moral philosophy and its history.