Liberty is a lofty concept. But what exactly is liberty? What kind of value does it have? What institutions best promote and protect the forms of liberty that are worth wanting? And what are the specific benefits and dangers inherent in so–called free societies? Using a fusion of philosophical, social scientific, and historical methods, A Brief History of Liberty offers a succinct survey of pivotal moments in the evolution of personal freedom, drawing on key historical figures from John Knox and Martin Luther to Karl Marx and Adam Smith to Roger Williams and Thurgood Marshall.  The authors examine how past (if incomplete) successes in the struggle for liberty have led many of us to liberty's "last frontier": internal psychological obstacles to our being as autonomous as we would like to be.  Readers are encouraged to reflect on their own concepts of personal freedom –– what it is, where it comes from, why they have it, and what it has done for them. Stimulating and thought–provoking, A Brief History of Liberty offers readers a philosophically–informed portrait of the elusive nature of one of our most cherished ideals.