Complex sentence: There he happened to find an anthology of modern British poetry, and the works of Dylan Thomas, T. S. Eliot, and W. H. Auden included in that book inspired his first thoughts about becoming a writer.
Split into simpler sentences: There he happened to find an anthology of modern British poetry, and the works of Dylan Thomas, T. S. Eliot, and W. H. Auden. That book inspired his first thoughts about becoming a writer.