This series is devoted to original philosophical work in the foundations of ethics. It provides an annual selection of much of the best new scholarship being done in the field. Its broad purview includes work being done at the intersection of ethical theory and metaphysics, epistemology, philosophy of language, and philosophy of mind. The chapters included in the series provide a basis for understanding recent developments in the field. Chapters in this volume explore topics including the nature of reasons, the tenability of moral realism, moral explanation and grounding, and a variety of epistemological challenges.