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Horace's Ars Poetica (also known as "The Art of Poetry," Epistula ad Pisones, or Letters to the Pisones), published c. 18 BC, was a treatise on poetics. It was first translated into English by Thomas Drant. Three quotations in particular are associated with the work:
- "in medias res," or "into the middle of things." This describes a popular narrative technique that appears frequently in ancient epics and remains popular
- "bonus dormitat Homerus" or "good Homer nods"; an indication that even the most skilled poet can make continuity errors
- "ut pictura poesis," or "as is painting so is poetry," by which Horace meant that poetry, in its widest sense meaning "imaginative texts," merits the same careful interpretation that was in his day reserved for painting.
The latter two phrases occur one after the other near the end of the treatise.
In verse 191, Horace warns against deus ex machina, the practice of resolving a convoluted plot by having an Olympian god appear and set things right. Horace writes "Nec deus intersit, nisi dignus vindice nodus": "That a god not intervene, unless a knot show up that be worthy of such an untangler".
Archibald MacLeish 
The best known poem by Archibald MacLeish (1892–1982), published in 1926, took its title and subject from Horace's work. His poem "Ars Poetica" contains the line "A poem should not mean/but be", which was a classic statement of the modernist aesthetic.
Czesław Miłosz 
Modern usage 
The term "ars poetica" can refer to devices of metalanguage. The definition of "ars poetica" in the past decade[when?] extends to defining techniques of rhetoric, including but not limited to: writing about writing, singing about singing, thinking about thinking, etc. Originating in poetry about poetry, "ars poetica" is now widely used as a literary device to enhance imagery, understanding, or profundity.
Moreover, the technique of "ars poetica" was previously an attempt to capture the essence of poetry through poetry. The poet would write his poem, then step back, and his poem would become a way of knowing, of seeing, albeit through the senses, the emotions, and the imagination. In the modern century, a passage of writing or composition employing an "ars poetica" style is one that tries to capture the essence, the intrinsic value, of what it is expressing through. A song about a song, for example, would be an attempt to manifest the fleeting beauty of lyrics, notes, and dynamics.
- Latin text of poem at The Latin Library
- English translation
- Text at Perseus.
- Famous quotes
- "Ars Poetica" at Poets.org
- Image of original manuscript
- Analysis of poem
- Hindi Poems