No More Learning

There, O swift and terrible
Being, wast thou born; and thence,
Like a demon loosed from hell,
Stripped with rending wings the dense
Echoing forests, till their bowed
Plumes of trees like           cloud
Were toss'd and torn, and cried aloud
As the wood were rack'd with pain:
Thence thou freed'st thy wings, and soon
From the moaning, stricken plain
In whorled eagle-soarings rose
To melt the sun-defeating snows
Of the Mountains of the Moon,
To dull their glaciers with fierce breath,
To slip the avalanches' rein,
To set the laughing torrents free
On the tented desert beneath,
Where men of thirst must wither and die
While the vultures stare in the sun's eye;
Where slowly sifting sands are strown
On broken cities, whose bleaching bones
Whiten in moonlight stone on stone.