Ecthesis and Demonstration: Re-evaluating Aristotle’s Method of Syllogistic Proof
Ecthesis and Demonstration: Re-evaluating Aristotle’s Method of Syllogistic Proof

Summary/Abstract: This paper re-evaluates the role of ecthesis in Aristotle’s syllogistic proof, arguing that it constitutes a central component of his demonstrative method rather than a marginal or redundant device. While traditional interpretations treat ecthesis merely as a heuristic gesture or an early form of substitution, this study contends that Aristotle employs ecthesis as an expository act that sets out a representative instance to make abstract term relations intelligible. Through a close analysis of key passages in Prior Analytics, combined with insights from classical commentators and modern formal reconstructions, the paper demonstrates that ecthesis operates as a bridge between conceptual abstraction and demonstrative clarity. It supports the epistemic aims of apodeixis by transforming logical relations into cognitively graspable forms. Reassessing ecthesis thus enriches our understanding of Aristotelian proof and highlights the enduring value of exposition as a method within logical and philosophical inquiry.

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