The sixth edition has been substantially revised to take into account the most recent scholarly work, and to elaborate on many of the key ideas and arguments. A broad overview of the main topics and central issues in legal theory, Jurisprudence provides students with an informative introduction. Academically challenging and often controversial ideas are presented in a lucid, straightforward manner with special attention given to legal positivism, natural law theory, legal realism, law and economics, critical race theory, and feminist legal theory as well as to such leading theorists as Hart, Dworkin, Fuller, and Posner. The book will be essential reading for both the postgraduate and undergraduate.