A great explanation of the power of poetry, especially in communicating truth in ways that cannot be any other way:
Poetry communicates primarily through images and association contrived by words or sounds. A well-written poem can often express the wrongness of abortion or the cruelty of slavery more powerfully and more persuasively than an articulate argument, because the reader experiences the idea on an emotional, associative level. For example, the injustice described in a poem may arouse a feeling of righteous anger because it sparks a personal memory of the reader and a corresponding emotion of pity, compassion, or anger. One’s personal experiences, separate from the poem, then become linked with the spirit of the poem by the shared emotion or some connecting phrase. The poem lives and breathes truth in a way that is beautiful, real, and compelling.