William Wordsworth's long autobiographical poem "The Prelude" traces the development of the poet from childhood to adulthood. It was originally composed of two books in 1799 and was later expanded to 14 books over 35 years. The poem focuses on Wordsworth's experiences with nature and society and how they shaped his philosophical ideas and abilities as a poet. Through blank verse and a freedom of tone, Wordsworth explores themes of nature, imagination, childhood, and the role of the poet in a rapidly industrializing world.