What are the concepts and principles that underpin the design and delivery of social policies? This thoroughly revised edition of a trusted text provides an authoritative introduction to the theoretical framework of social policy. Drawing upon the fields of politics, sociology and philosophy, the book offers analysis of the history and relevance of a range of core concepts such as equality, liberty, citizenship and power. It explores key ideologies of welfare, including Marxism, Feminism and the Radical Right, and presents critical perspectives on the nature of society and class. A stimulating combination of classic debates and recent developments in the field, this edition: * Features an entirely new chapter on the growing influences of global justice and environmentalism * Includes thought-provoking new 'Questions for Further Discussion' at the end of each chapter * Addresses fundamental issues in contemporary society such as social exclusion, social division and the nature of happiness. Written in a down-to-earth and engaging style, this major text is essential introductory reading for all students of Social Policy, as well as for any student of Sociology, Politics or Public Policy seeking to understand what is at stake in welfare policies of the 21st century.