Philipp Lepenies, Principal Investigator at SCRIPTS and professor of politics with a focus on sustainability at Freie Universität Berlin, was part of the SWR2 Forum discussion together with historian Jens Hacke and philosopher Elif Özmen. Moderated by Michael Köhler, they spoke about the 'ghost of liberalism' and the possibility of rethinking the concept. Listen to the complete discussion here (German).