Discuss the context and significance of the following quote, “He told me of an ancient feud between two brothers which split all the world between darkness and light. And I, Grendel, was the dark side, he said in effect. The terrible race God cursed. I believed him. Such was the power of the Shaper’s harp!” (51) What story is he referring to? Why does he believe in it as well, even though Grendel is so cynical? What power does the Shaper seem to have and why?