expense in reimbursing the publisher), for reasons that have never become clear. However, the Hans Kelsen Institute eventually decided that it should be published. It is a vigorous defense of modern science against all, including Voegelin, who wished to overturn the accomplishments of the Enlightenment by demanding that science be guided by religion. Kelsen seeks to expose contradictions in their claim that modern science, after all, rests upon the same sorts of assumption as religionthat it constitutes forms of "new religion" and so should not complain when old religion is brought back in. Four major areas of Kelsen's contributions to legal theory over his lifetime included the following areas of (i) judicial review, (ii) hierarchical law, (iii) the de-ideologicalization of positive law to strongly disassociate all reference to natural law, and (iv) the clear delineation of the science of law and legal science in twentieth century modern law. Judicial review Judicial review for Kelsen in the twentieth century was part of a tradition inherited from the common law tradition based upon the American constitutional experience as introduced by John Marshall. By the time the principle had reached Europe and specifically Kelsen, the issue of the codification of Marshall's common law version of judicial review into its form of constitutionally legislated law became an explicit theme for Kelsen. In drafting the constitutions for both Austria and Czechoslovakia, Kelsen chose to carefully delineate and limit the domain of judicial review to a narrower focus than was originally accommodated by John Marshall. Kelsen did receive a lifetime appointment to the court of judicial review in Austria and remained on this court for almost an entire decade during the 1920s. Hierarchical law Hierarchical law as a model for understanding the structural description of the process of understanding and applying the law was central for Kelsen and he adopted the model directly from his colleague Adolf Merkl at the University of Vienna. The main purposes of the hierarchical description of the law was three-fold for Kelsen. First, it was essential to understanding his celebrated static theory of law as elaborated in Chapter four of his book on the Pure Theory of Law (see subsection above). In its second edition, this chapter on the static theory of the law was almost one hundred pages in length and represented a comprehensive study of law capable of standing as an independent subject for research for legal scholars in