In the wake of the financial crisis of 2008 and ongoing debt-related troubles there have been widespread calls to put banking and economic activity on a secure ethical foundation, either by regulation or through voluntary reform. In this volume a distinguished set of authors explore various economic, philosophical, and ethical ideas from historical, contemporary, and future-looking perspectives. At the core are two related ideas much mentioned but far more rarely examined: the idea of natural law and that of the common good. In these essays the foundations and meaning of these notions are carefully studied and put to work in examining the nature and scope of ethics in relation to global economics.