Josef von Sonnenfels, Univ.-Prof. Dr. art. lib., Dr. phil., Dr. jur.

Josef von Sonnenfels came from a Jewish family who immigrated to South Moravia from Berlin and converted to the Catholic faith here. He first graduated from the Piarist College in his birthplace Nikolsburg (Mikulov) and then from the Faculty of Philosophy at the University of Vienna (1745–49). After serving in the military for five years, he began studying law in Vienna. His preferred teachers were the canonist Paul Josef Riegger and the professor of natural law Karl Anton von Martini.

In 1763, Josef von Sonnenfels was awarded the newly created professorship for police and cameral science (political science), which was initially based at the Faculty of Philosophy and from 1784 at the Faculty of Law. Sonnenfels understood „police science“ to mean the principles of „establishing and managing internal security ...“ Thus, police science encompassed „numerous areas of the state, such as questions of security, population growth, welfare, education, training, social issues“ etc. In addition, he worked for many years as a law teacher at the Theresian and Savoy Knight's Academies as well as in numerous other secondary offices, including as a theater censor and advisor to the Censorship Court Commission (1770–72), member of the Lower Austrian government (from 1773) and also as a member of the Study Court Commission (1780). In 1781, Emperor Joseph II entrusted him with the „doctrine of business style“ in addition to cameral science, with the simultaneous task of enacting all additional laws.

As a „state stylist“, Sonnenfels also had an influence on the content of legislation and made a lasting contribution to the intellectual shaping of the Austrian bureaucracy with his work „On Business Style“.

He was a member and advisor to numerous commissions. He was twice elected Rector of the University of Vienna (1794, 1796), and from 1811 he was President of the Academy of Fine Arts. Sonnenfels had a lasting impact through his legal and economic policy teachings, through which he influenced generations of Austrian lawyers in the spirit of Austrian national education and in the Josephinian spirit. From 1765 to 1848, his book „Grundsätze der Polizey, Handlung und Finanz“ (Principles of Police, Action and Finance) was regarded as the definitive text and lecture book at Austrian universities. In terms of state theory and philosophy, Sonnenfels stood on the basis of the natural law doctrine of state contracts, which he gave a strong utilitarian coloring. In doctrine and practice, he strove to improve the quality of law and comprehensive codifications, in which he himself was involved to varying degrees (Josefinisches Strafgesetz, Allgemeines bürgerliches Gesetzbuch). In the area of criminal law, for example, he achieved the extensive abolition of torture.

As a publicist and critic, he promoted the new German literature in his weekly newspaper „Der Mann ohne Vorurteil“ and campaigned for the renewal of Viennese theater in the spirit of Gottsched. Sonnenfels, who was also a leading freemason (lodge „Zur wahren Eintracht“) and illuminate, is generally regarded as an outstanding representative and disseminator of the Enlightenment in Austria.

He was honored in 1998 by the naming of one of the „Gates of Remembrance“ on the campus of the University of Vienna (Sonnenfels Gate, main entrance Alser Straße 4).