Dr. Max Haller (Italian and Austrian citizen) was a professor of sociology in Graz from 1985 to 2015 after conducting scientific work at the Institute for Advanced Studies in Vienna and at the University and ZUMA Mannheim. He also taught as a visiting professor at universities in several countries in Europe, the USA, and Africa. His publications have appeared in the most prestigious international sociological journals. He is a member of the Austrian Academy of Sciences and is currently researching issues related to migration, citizenship, and multilingualism there. He was a co-founder of the European Sociological Association and the Viennese Sociological Association.