ide a detailed account of the functions exhibited by living things -vegetable, animal, and human-and explains the use of sensation and reason to achieve genuine knowledge. That Aristotle was interested in more than a strictly scientific exploration of human nature is evident from the discussion of literary art (particularly tragedy) in Peri PoihtikhV (Poetics) and the methods of persuasion in the RhtoreiaV. (Rhetoric).
             Another sharp contrast between Plato and Aristotle emerges in the latter's Poetics, and analysis of the effects of dramatic art. Aristotle, unlike his teacher, supposed that the extravagant representation of powerful emotions is beneficial to the individual citizen, providing an opportunity for the cathartic release of unhealthy feelings rather than encouraging their development.
             Tragedy in particular arouses our fear and pity, as we recognize the inherent flaw of the tragic hero. Having seen the outcome in dramatic form, we are less likely to commit similar acts of pride, Aristotle argued, so the literary arts have a direct benefit to human society. This provides no grounds for a Platonic notion of ce
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