What is a right? What, if anything, makes rights different from other features of the normative world, such as duties, standards, rules, or principles? Do all rights serve some ultimate purpose? In addition to raising these questions, philosophers and jurists have long been aware that different senses of ‘a right’ abound. To help make sense of this diversity, and to address the above questions, they developed two types of accounts of rights: models and theories. This book explicates rights modelling and theorising and scrutinises their methodological underpinnings. It...