Pure Theory of Law

Pure Theory of Law (German:Reine Rechtslehre) is a book by legal theorist Hans Kelsen, first published in 1934 and in a greatly expanded "second edition" (effectively a new book) in 1960. The second edition appeared in English translation in 1967, as Pure Theory of Law, the first edition in English translation in 1992, as Introduction to the Problems of Legal Theory. The theory proposed in this book has probably been the most influential theory of law produced during the 20th century. It is, at the least, one of the high points of modernist legal theory.