The Theme of Nature in the Works of Plato, Bryant, Twain, and Thoreau In his Poetics, Plato contemplates the nature of aesthetics and existence. He postulates that for every existing object and idea there is an absolute "ideal" which transcends human experience. He further concludes that art, including literature, is an aesthetic representation of real objects and ideas that is used to better understand their "ideals." In theory, as an object becomes closer ideal it also becomes a better subject for the artist. American artists in particular have been given an invaluable opportunity to explore this realm