This article discusses universities in Nazi Germany. In May 1933 books from university libraries which were deemed culturally destructive, mainly due to anti-National Socialist or Jewish themes or authors, were burned by the Deutsche Studentenschaft (German Student Union) in town squares, e.g. in Berlin, and the curricula were subsequently modified. Martin Heidegger became the rector (and later head) of Freiburg University, where he delivered a number of National Socialist speeches and for example promulgated the Führerprinzip at the University on August 21, 1933.