You cannot hear a poem without it changing you. They heard it, and it colonized them. It inherited them and it inhabited them, its rhythms becoming part of the way that they thought; its images permanently transmuting their metaphors; its verses, its outlook, its aspirations becoming their lives. Within a generation their children would be born already knowing the poem, and, sooner rather than later, as these things go, there were no more children born. There was no need for them, not any longer. There was only poem, which took flesh and walked and spread itself across the vastness of the known.