 He subsequently went to the Faculty of Philosophy in Zadar, becoming an associate professor (1956), docent (1958), extraordinary (1962) and full (1968-1990) professor.In 1969 he worked as a visiting professor at the University of Michigan, and since 1971 at the University of Regensburg.In 1975 he became an associate, and in 1977 extraordinary, and in 1986 full member of the Yugoslav Academy of Sciences and Arts.