Available Open Access under CC-BY-NC licence. Paul Spicker's new book takes the three founding principles of the French Revolution - Liberty, Equality, Fraternity - and examines how they relate to social policy today. The book considers the political and moral dimensions of a wide range of social policies, and offers a different way of thinking about each subject from the way it is usually analysed. The book is in three main parts, one part devoted to Liberty, Equality and Fraternity in turn. Each part explores the elements and dimensions of the key concept, its application to policy, its interrelationship with the other two principles, and how policies have developed to promote the principle in society. The conclusion outlines three models of radical politics, based on the main concepts. Liberty, equality, fraternity is an original, thought-provoking book, addressing perennial themes with many topical examples drawn from policy in practice, and offering distinctive insights into socialist and radical thinking.