The true poem rests between the words.
Harmony, rhythm, concision, concinnity are all elements that are epitomized in poetry. Cultivated in poetry, which is the nucleus of the creative impulse, these elemetns serve every art form: acting a character, writing a novel, creating music, dance, sculpture, painting.
For literary purposes, the art of writing poetry can be simply defined as: A creative act using language as a medium refined to an art.
Poetry achieves its pinnacle when it is the perfection and mastery of expression (creation, perception) as Art (arrangement).
Poetry is a transfusion of the ephemeral blood that sustains the universal heartbeat within human society.
Poetry emulates the Cosmos perhaps because the Cosmos itself is the grandest conceivable example of rhythm, rhyme, harmony and concinnity.
It is interesting to note that poetry, a literary device whose very construct involves the use of words, is itself the word of choice by persons grasping to describe something so beautiful, it is marvelously ineffable.
Poetry is a subset of a Cosmos, which in itself, is a poem.
A phoneme, an utterance, could be said to be the beginning of poetry's evolutionary chain.
Dreams are the food of human progress. Poetry, like all physics, ultimately quantifies the unquantifiable that is beyond all form.