In a revolt against rationalism, Romanticism sought to return to nature and the belief in the goodness of humanity, with the artist considered to be a profoundly individual creator. Beginning in the early 19th century, Romantic ideals developed largely in opposition to the traditions of Greco-Roman antiquity, and advocated an open-ended and progressive--that is, modern--view of the age. Yet Romantic artists, searching perhaps for unattainable ideals,...