 It was a Neoplatonic commonplace that the high point of logic was Posterior Analytics with its treatment of knowledge with certainty. The Neoplatonists also considered that Aristotle had arranged his Organon so that the path up to this summit through Categories, De Interpretatione, and Prior Analytics assembled the tools of logic, and the downward slope from Posterior Analytics onwards allowed the student to apply these tools within demonstrative methods, dialectical methods, sophistical methods, rhetorical methods, and poetic methods in turn. 