In which three parts of this excerpt from "Dover Beach" by Matthew Arnold does the speaker describe the sorrow and confusion that he wants to escape? The Sea of Faith Was once, too, at the full, and round earth's shore Lay like the folds of a bright girdle furl'd. But now I only hear Its melancholy, long, withdrawing roar, Retreating, to the breath Of the night-wind, down the vast edges drear And naked shingles of the world. Ah, love, let us be true To one another! for the world, which seems To lie before us like a land of dreams, So various, so beautiful, so new, Hath really neither joy, nor love, nor light, Nor certitude, nor peace, nor help for pain; And we are here as on a darkling plain Swept with confused alarms of struggle and flight, Where ignorant armies clash by night.