Without making a conscious effort to learn it, the majority of people are able to recite at least one poem from memory. A fragment heard at a funeral and never fully released, a stanza found in a waiting room magazine, or a few lines from something read in school. The poem came, and it remained. The poem did something to the mind that the mind was unable to reverse afterward; there was no study, no index cards, and no repetition exercises. It turns out that the question of precisely what that something is is more intriguing than it first seems.
Researchers studying memory have discovered that the brain continuously filters information, keeping what is deemed meaningful or emotionally significant while rejecting the majority of incoming information as irrelevant. A poem that endures has managed to get past that filter; it has been identified by the brain as valuable and stored with the important items rather than the throwaway ones. Poetry expresses what is impossible to remember in order to make it impossible to forget, according to the Poetry Foundation. which describes a real thing but sounds almost paradoxical. A poem expresses an emotion or a reality that existed prior to the words and that the reader instantly recognized as their own but had never been able to put into words. Additionally, the feeling is now retrievable due to the existence of the language. The poem serves as a container for something the reader had been carrying around.
It is fairly well known that rhythm is a component of the mechanism. Similar to how a melody creates patterns in the brain, rhyme, meter, and assonance give the mind something structural to cling to that goes beyond simple meaning. Just as a song is easier to remember than a speech, a line that scans is much easier to remember than one that doesn’t. Traditional poets have always understood this intuitively, even before the term “neuroscience” was coined. The turn of the sonnet, the refrain of the ballad, and the compulsive repetition of the villanelle are not ornamental choices. These are engineering choices, incorporating the hooks that enable retention. The fundamental requirement is the same: give the mind something to grasp. Free verse can accomplish the same effect in other ways, such as by using the appropriate line break at the appropriate time or a sonic pattern composed of consonants rather than end rhymes.
The other main vehicle is sensory imagery. Statements about love, grief, or death that are abstract have a tendency to fade. A particular image, such as a field of poppies seen from a moving train, a wheelbarrow glazed with rain, or a plum left cold in the icebox, lodges in the memory differently and is partially processed by the same systems that handle actual sensory experience. In contrast to abstract concepts, concrete images give the poem a physical address in the mind. Mary Oliver understood this better than anyone else; her poems are almost aggressively specific, based on the details of marshes, grasshoppers, and morning light on specific bodies of water during specific seasons. The effect is not incidental to the specificity. It’s the result.
It’s also important to think about what readers contribute to a poem, which moves the focus from craft alone. The most memorable poems typically leave intentional gaps, allowing the reader’s own experience to fill in the blanks and complete the meaning. A poem that fully explains itself leaves the reader with nothing to add, and the reader’s contribution turns out to be part of what forges the connection. A poem becomes partially the reader’s when they fill in the blanks with their own sorrow or a particular summer afternoon memory. Their fingerprints are on it. Years later, some lines feel less like something read and more like something lived because of this ownership; it’s as though the words have always been inside the reader, just waiting for the poet to arrange them correctly.
This could be the reason why so many people describe coming across specific poems at exact times of personal crisis and finding them to be exact—not roughly correct, but exact, as if written for that particular situation by someone who understood it better than the reader did. Gerard Manley Hopkins at two in the morning. Elizabeth Bishop in an airport. During a challenging winter, I came across a Rumi couplet on a friend’s wall. When the collision finally occurred, the brain was forced to retain the poem because it was already there, waiting for the right reader at the right time.
The persistence of great poems across centuries, translations, and cultural contexts that are completely different from the ones that gave rise to them has an almost stubborn quality. Sometimes they outlive their languages. Their authors would hardly recognize the forms in which they circulate. This enduring power is not coincidental, nor is it merely a result of curriculum or reputation. The poems that endure are those that managed to get past the filter and the transient and into the deeper storage of the brain, where the important things truly reside. It doesn’t lessen the experience to know how they get there. If anything, it makes the subsequent experience with a poem worth preserving feel a bit more like what it is: the mind realizing what it needed and silently choosing to hold onto it.
Chloe Olliver is senior editor at vclib.org, where she leads editorial coverage of literary criticism, political commentary, cultural analysis, and the evolving relationship between literature and public life across New York City and beyond. With a career spanning the intersection of literary journalism, political commentary, and educational publishing, Chloe brings both rigorous research discipline, in-depth knowledge, experience, and an accessible editorial voice to subjects that most readers find thought-provoking and culturally significant.