The book's raison d'etre is to promote scholarly discourse and dissemination of knowledge on the nature of law by analyzing the nature and development of jurisprudence. It aims to provide original in-depth investigations of both theoretical and practical questions on the social foundations of legal systems and the philosophy of jurisprudence, as well as their applicability in the context of South Sudan. The book traces the social foundations of law by analyzing its relationship with other concepts, its sources and classifications, then concludes with an assessment of the judicial system of South Sudan. The second part of the book is a dissection of the philosophy of jurisprudence. Here, various philosophical perspectives of the law are discussed, including natural law theory, positive law theory, sociological theory, realist theory, conflict theory, Marxism, and African customary law. It provides the reader with a theoretical understanding of the ideologies that shape laws and policies, as well as contemporary problems. This book is an essential read for anyone who interacts and is curious about law and philosophy.