We have been taught that all humans share intrinsic qualities that lend them a common dignity. Philosophers conceive of a certain level of cognitive capacity as the very mark of humanity, and extend the mantle of equal moral fellowship to these “persons.” But what of individuals with diminished cognitive abilities? Cognitive disability poses significant challenges to these fundamental philosophical concepts, prompting a variety of difficult questions. Should those with cognitive disabilities be excluded from the protections and responsibilities we routinely assign to “persons”? Are we forced to reconsider the very concept of “personhood”? How should the interests of people with cognitive disabilities and their caregivers be represented politically? Who is responsible for guaranteeing their care? And to what extent ought they to be granted autonomy?Cognitive Disability and Its Challenge to Moral Philosophy addresses these concerns in a series of thought-provoking Chapters contributed by some of the most prominent moral philosophers of our time, as well as clinicians and medical historians. Collectively, the Chapters represent an important milestone in contemporary thinking about ethical considerations relating to people with cognitive disabilities.Eva Feder Kittay is Distinguished Professor of Philosophy, Women’s Studies Affiliate, and Senior Fellow of the Center for Medical Humanities, Bioethics and Compassionate Care at Stony Brook University, New York. Her published works include Love’s Labor: Essays on Women, Equality, and Dependency (1998); The Blackwell Guide to Feminist Philosophy (co-edited with Linda Martin Alcoff, Wiley-Blackwell, 2006); The Subject of Care: Feminist Perspectives on Dependency (with Ellen K. Feder, 2003); and Metaphor: Its Cognitive Force and Linguistic Structure (1990). She is also the mother of a cognitively disabled woman.Licia Carlson is an assistant professor of philosophy at Providence College. Her research interests include twentieth-century French philosophy, ethics, feminist theory, philosophy and disability, and the philosophy of music. She has published articles on bioethics, feminist theory, disability, and the works of Michel Foucault, and is the author of The Faces of Intellectual Disability: Philosophical Reflections (2010).