thought regarding universals, including realism and nominalism. The opening of the treatise sets the stage for discussing the long-lasting controversy over the nature of genres and species, emphasizing its abstract nature and the fervent debates it sparked over the centuries. It begins by citing historical sentiments from figures like Jean de Salisbury regarding the intensity of intellectual disputes surrounding the nature of universals. The section outlines different philosophical positions, primarily contrasting realism—the belief in the existence of universals as entities in their own right—with nominalism, which considers universals as mere names or labels lacking independent existence. This introduction establishes both the historical context and the philosophical stakes of the discussions that will unfold in the book. (This is an automatically generated summary.)