nˈoʊɾəbli, ˈæɹɪstˌɑːɾəlz poʊˈɛɾɪks dᵻskɹˈaɪbz ðə θɹˈiː ʒˈɑːnɹəz ʌv pˈoʊɪtɹi: ðɪ ˈɛpɪk, kˈɑːmɪk, ænd tɹˈædʒɪk, ænd dɪvˈɛləps ɹˈuːlz tə dɪstˈɪŋɡwɪʃ ðə hˈaɪɪstkwˈɔlᵻɾi pˈoʊɪtɹi ʌv ˈiːtʃ ʒˈɑːnɹə, bˈeɪst ɔnðɪ ˌʌndɚlˈaɪɪŋ pˈɜːpəsᵻz ʌv ðæt ʒˈɑːnɹə.
Notably, Aristotle's Poetics describes the three genres of poetry: The epic, comic, and tragic, and develops rules to distinguish the highest-quality poetry of each genre, based on the underlying purposes of that genre.