This book considers the way that Cesare Beccaria’s slim 1764 volume On Crimes and Punishments influenced policy developments worldwide and over decades, if not centuries, after its publication. For those who turn to Beccaria’s work today, the encounter is shaped by that knowledge. Appreciative of his book’s dual nature as historical document and repository of ideas, the contributions in this collection address different aspects of the criminal justice theory Beccaria offered his readers and face up to methodological questions raised by meeting a historical text of this kind – unsystematic and by modern standards often under-argued – with modern scholarly conventions in mind.Contributions in the first part of the book engage with Beccaria’s 'political theory of criminal justice' through the lenses of political and penal philosophy. How do we get from Beccaria’s blending of social-contractarian foundations and proto-utilitarian policy analysis to the concrete set of criminal justice pr