Untitled Slide
For Campbell, the associative nature of comparison goes deeper than mere similarities and differences, though it does not become a cornerstone of his rhetorical theory. In many ways, all manner of evidence, whether moral or scientific, comes “from the invariable properties or relations of general ideas (Cambell loc. 1406). But for Campbell and many of his contemporary thinkers, the nature of inquiry becomes more firmly ensconced by scientific discourse. Campbell primarily uses examples from science to explicate this process of inquiry, for example when a botanist encounters a new flower and must identify the relations between other known flowers. Though there are many different “component parts” to objects of comparison that can be combined in various ways, the goal is often to create a “species,” or identify broad connections between diverse objects. For Campbell, this is not only the one essential “criterion of all moral reasoning,” but also “the principal organ of truth” for all branches of knowledge, including science, philosophy, and theology (Campbell loc. 1808). Comparison, then, becomes an essentializing tool in the service of a single-ordered universe, creating an interpretative framework that divides communication into two parts, that which is universal and that which is arbitrary.