The environmental scientist, social democratic politician and Club of Rome Honorary President Prof. Ernst Ulrich von Weizsäcker will open the European Tolerance Talks 2020 on the topic “Exodus – Leaving the Familiar” on May 28th in the Carinthian mountain resort Fresach. The longtime member of the German Bundestag, German church council and senior official of the United Nations is one of the most prominent voices in German energy and environmental policy. Climate protection, renewable energies and sustainable economic cycles have been the main topics that the Ernst Ulrich von Weizsäcker has been dealing with since the 1970s because they are directly related to peace and security in a global context. The foundations for the next generations can only be secured if the balance between economy and environment can be achieved, says Weizsäcker. The studied biologist, UN director, SPD politician and book author not only addresses the problems, but also suggests solutions and concrete measures, such as moderate use of resources, circular economy or new technologies. In his opening speech in Fresach, he will go into how the “exodus” from the fossil age could succeed. (ws)