Wer soll der Hüter der Verfassung sein?

Hans Kelsen is seen as the most important precursor of constitutional jurisdiction in the 20th century. In his two ground-breaking texts from 1929 and 1931, he defends his concept of a central judicial authority with the power of judicial review over parliament as an element of pluralistic democracy against Carl Schmitt's concept of a presidential guardian of the political unity "Volk".