Particularly in "Song of Myself", Whitman emphasized an all-powerful "I" who serves as narrator. The "I" tries to relieve both social and private problems by using powerful affirmative cultural images.[25] The emphasis on American culture helped reach Whitman's intention of creating a distinctly American epic poem comparable to the works of Homer.[26] Originally written at a time of significant urbanization in America, Leaves of Grass responds to the impact urbanization has on the masses.[27] However, the title metaphor of grass indicates a pastoral vision of rural idealism.