In a warm office in Berlin’s trendy Kreuzberg district, Charlemagne is trying to persuade Yanis Varoufakis that he is a politician. “It’s a necessity. I really dislike running and asking people for votes,” protests the Greek economist when asked about European Spring, his new transnational political party. Does he think of himself as a politician? “No. The moment I do, shoot me.” Apparently inadvertently, Mr Varoufakis won his seat in the Greek parliament in 2015, became finance minister, took on the European economic establishment and failed.