ars poetica

[ ahrz poh-et-i-kuh, ahrs ]
/ ˌɑrz poʊˈɛt ɪ kə, ˌɑrs /

noun

a treatise on the art of poetry or poetics.
(initial capital letter, italics) a poem (c20 b.c.) by Horace, setting forth his precepts for the art of poetry.

British Dictionary definitions for ars poetica

ars poetica
/ (ˈɑːz pəʊˈɛtɪkə) /

noun

the art of poetry