and the Perspektiven der Wirtschaftspolitik -, initiated the Gossen prize to honor young economists that publish internationally and created a scholarship programme to financially support international conference presentations of young economists. In 1991 he founded the Center for Economic Studies at the University of Munich. It was intended to serve as a visitors’ center for academic economists invited from all over the world for research and teaching in Munich. On the basis of CES he founded the first German Graduate Programme in Economics, which has been compulsory for all Ph.D students of the faculty. Since 1999, when he became president of the Ifo Institute, CES and the Ifo Institute have met under an umbrella organisation, the CESifo Group, to build bridges between theoretical and empirical economic investigation and between researchers from all over the world. He founded the international CESifo Research Network. With its more than 1000 Professors of Economics from 63 countries it is among the largest international research networks of this kind. It publishes more than 500 research reports and organizes around 25 conferences per year. The Dutch Economist and former State Secretary of Education, Science and Culture of the Netherlands Rick van Ploeg honored Sinn’s contribution to strengthening Economics as a subject in Germany and continental Europe. Sinn is fellow of the National Bureau of Economic Research in Cambridge, Massachusetts, and was the first German-speaking economist to deliver the Yrjö Jahnsson Lectures in Helsinki (1999) and the Tinbergen Lectures in Amsterdam (2004). Sinn topped a ranking of German economist provided by the Frankfurter Allgemeine Zeitung (FAZ) in 2013, 2014 and 2015. The FAZ's ranking named him "Germany's most influential economist of 2014", arguing that "no other economics researcher in Germany has such a high profile in the media and politics and is also active in research." Since his retirement in 2016 he has occupied the second rank. In the 2006 Handelsblatt ranking of German economists (Ökonomen-Ranking VWL), based on cross citations of SSCI papers in SSCI journals, Sinn ranked fourth. In a study by Ursprung and Zimmer, based on SSCI citations per author of the full oeuvre, Sinn ranked second of all German economists, after Nobel laureate Reinhard Selten. In the RePEc database he is the German economist most frequently quoted in academic works. In a survey conducted by the Financial Times Deutschland among more than 550 German economic experts, Sinn was one of the two professors