“How canmedia it happen that perspectives which diminish richness and deprive human existence of its value become so powerful?” Paul Feyerabend wrestled with this question until the end of his life. In 1999, Feyerabend’s previously unpublished work “Conquest of Abundance. A Tale of Abstraction versus the Richness of Being” was published posthumously. The German translation bears the title “Die Vernichtung der Vielfalt. Ein Bericht” (“The Annihilation of Diversity. A Report”). In the foreword to the German edition, Grazia Borrini-Feyerabend writes that in the book, Paul Feyerabend recounts some special moments in the development of Western culture—periods in which complex worldviews with their overflowing interpretations of reality had to give way to a few abstract concepts and stereotypical representations. Feyerabend seeks to understand the “rise of rationalism,” its advantages, transformations, and distortions. Thus, Feyerabend analyzes the language in the Homeric epics, the rationalism of XenophanesXenophanes, the logical justification for the preservation of being in ParmenidesParmenides, and its influence on modern physics. He embeds his case studies in the respective cultural, political, and technological contexts of the time, thereby pointing to the ambiguity of the supposed progress in philosophy, science, and art. People do not simply represent the world through abstract concepts; they also change the world and its categorical interpretations.