Aristotle begins his inquiry by establishing that epic poetry, tragedy, and comedy are fundamentally modes of imitation that differ through their means, objects, and manner. He posits that the human instinct for imitation and the pleasure derived from recognition are the natural origins of poetry. The discussion focuses primarily on tragedy, which Aristotle defines as the imitation of a serious, complete action of magnitude through dramatic action rather than narrative.
The soul of tragedy is identified as the plot, or the combination of incidents, which takes precedence over character development, thought, diction, melody, and spectacle. A well-constructed plot requires unity, meaning it must possess a clear beginning, middle, and end without extraneous episodes. Aristotle distinguishes between simple plots, which change fortunes without reversal or discovery, and complex plots, which incorporate these elements to evoke pity and fear.
Peripety is defined as a sudden reversal of fortune, while discovery represents the transition from ignorance to knowledge regarding identity or fate. The finest tragedies utilize complex plots centered on noble characters who fall from prosperity due to a grave error in judgment rather than utter depravity. These situations generate the catharsis of pity and fear, which are the specific emotional goals of tragic drama.
Aristotle examines the structure of epic poetry, noting its similarities to tragedy in plot construction and thematic depth while highlighting its distinct advantages in scale and the use of the heroic metre. Epics can accommodate simultaneous events and broader narratives that would strain the limits of stage performance. However, he ultimately argues that tragedy is the higher form of art due to its concentration, unity, and the added sensory impact of music and spectacle.
The treatise concludes with an analysis of diction and poetic language, emphasizing the importance of balancing ordinary words with unfamiliar terms and metaphors. Aristotle addresses common criticisms of poetic logic, providing rational justifications for impossibilities and improbabilities by evaluating the specific aims of art against strict historical or factual correctness. Throughout the work, the focus remains on the structural mechanics that make narrative art effective.
