Jurisprudence
Jurisprudence is the philosophy and theory of law. It is concerned primarily with what the law is and what it ought to be. That includes questions of how persons and social relations are understood in legal terms, and of the values in and of law. Work that is counted as jurisprudence is mostly philosophical, but it includes work that also belongs to other disciplines, such as sociology, history, politics and economics. Modern jurisprudence began in the 18th century and was based on the first principles of natural law, civil law, and the law of nations.