Originally published in 1987, this book discusses how matters of fact influence moral judgments and also how the judgments themselves influence facts. It demonstrates that ethics is a practical subject affecting our moral assessment of inter-personal behaviour and the conduct of public affairs. It is designed as in introduction to moral philosophy for first-year undergraduates and provides an excellent basis for further study as well as serving as a valuable background text for those whose primary interests are in law, politics, sociology, social history and education.