The document discusses different theories of poetry from classical philosophers like Plato and Aristotle and poets like Wordsworth. It traces concepts of poetry from its banishment by Plato as morally corrupting to Aristotle's view of it as using fictional examples to purify emotions. Wordsworth's definition of poetry as the "spontaneous overflow of powerful feelings" is also examined, along with his view of the poetic process. The document concludes that Wordsworth redefined poetry by going back to its origins while building on concepts from Coleridge and classical philosophers.