This book presents a pluri-dimensional approach to todays most relevant perspectives on the boundaries of Law, both in terms of its creation and performance, in order to discuss its current meaning and role as a normative order. To do so, it presents a broad range of standpoints concerning philosophical, theoretical, juridical-political, dogmatic and methodological issues, and proposes new bases for the construction and effectiveness of legal statements and decisions, from those issued by juridical-political organisations to those taken by judges. In addition, it sheds new light on discussions concerning the juridical and political role of Law in connection with public policy and democracy-related issues, especially contemporary debates between International Law and Human Rights Law, on the one hand, and between Public Law and Private Law, on the other.