问答题 Define the major theme of the following short story. (40 points)

问答题 Something there is that doesn"t love a wall, That sends the frozen ground swell under it, And spills the upper boulders in the sun, And makes gaps even two can pass abreast.

问答题 The awful shadow of some unseen power, Floats though unseen amongst us, —visiting, This various world with as inconstant wing, As summer winds that creep from flower to flower.