The sociology of knowledge would be unthinkable without the foundational contributions of scholars like Fleck, Mannheim, Mach and the Polanyi brothers, who wrote from their Eastern European outlooks. The question of political epistemology and politics of truth became a key issue in this circle initiated by Bernhard Kleeberg (Erfurt), Friedrich Cain (Vienna), Karin Reichenbach (GWZO Leipzig), Jan Surman (Prag) and Dietlind Hüchtker (Vienna) please compare the [project website], the lively blog and newsletter HPS CESEE, a special section of the journal Historyka. Studia Metodologiczne 49/2019, or the second annual "Pre- and Postdoc Workshop South/Eastern and Central European Histories of Science and the Humanities" hosted in Vienna [programme].