The author examines poetry as a social institution rather than as art instruction or metaphysical origin, using historical and comparative methods. He defines poetry as rhythmic utterance and argues rhythm is the essential feature; traces a dualism between communal, collective forms and individual artistic expression; analyzes communal genres such as ballads, refrains, work and bridal songs, and dance, noting devices like incremental repetition and improvisation; surveys the effects of Christianity and scientific thought on poetic roles; outlines early differentiations into lyric, drama, and epic; and sketches the modern triumph and revival of the individual artist alongside communal traditions.