Sustainability is one of the key concepts underlying our thinking about corporate responsibilities, particularly with respect to the environment and inter-generational justice, but also in relation to corporate governance and the long-term economic viability. The advantages of the discourse of Sustainability are that it brings together contemporary economic and moral imperatives in the context of scientific knowledge. Its disadvantages relate to its open-ended content, its systematic ambiguity, and the internal tensions between economic growth, human survival and global justice. The essays in this volume reflect these strengths and weaknesses from a variety of viewpoints – economic, scientific, social and philosophical. They illustrate and illuminate the varied and contested content and utility of this currently popular concept and point to its multiple implications for the development of corporate responsibilities.