Aragon's poetry is diverse and varied. He favoured equally poetic prose and fixed-form verse, to which he brought a renewed sensibility. After a very free early period, marked by surrealism and its subversive language, Aragon returned to more classical forms (measured verse; rhyme, even). He felt that this was more in keeping with the national emergency during World War II. After the war, the political side of his poetry gave way more and more to lyricism for its own sake. He never went back on that embrace of classicism.