The aim of this volume is to open up reflection on the nature of vulnerability, the responsibilities owed to the vulnerable, who bears these responsibilities, and how they are best fulfilled. In canvassing responses to these questions, the contributors engage with a range of ethical traditionsand with issues in contemporary political philosophy and bioethics. Some essays in the volume explore the connections between vulnerability, autonomy, dignity, and justice. Other essays engage with a feminist ethics of care to articulate the relationship between vulnerability, dependence, and care. These theoretical approaches are complemented by detailed examination of vulnerability in specific contexts, including disability; responsibilities to children; intergenerational justice; and care of the elderly. The essays thus address fundamental questions concerning our moral duties to each otheras individuals and as citizens. Contributing significantly to the development of an ethics of vulnerability, this volume opens up promising avenues for future research in feminist philosophy, moral and political philosophy, and bioethics.