ABSTRACT
The pisteis constitute rhetorical argumentation. Among these, the logos proof is as crucial as it is vexing. Together with the other pisteis entechnoi – ethos and pathos – the logos proof has since Aristotle been considered to result from the application of the art (téchnee) of rhetoric. The pisteis atechnoi, on the other hand, are ‘artless’, even though they are also proofs that concern the subject matter. Furthermore, the logos proof represents the rational part of rhetorical argumentation, without necessarily being logical. By upholding these two distinctions, the third artistic proof remains more useful than when equated with logic or confused with pisteis atech-noi. The logos proof represents a rhetorical kind of rational argumentation with the telos of pistis, which does not necessarily require logic nor facts
