Lean not upon the arm of man for vengeance,
When such a guilt as never finds atonement,
Being a thing of darkness, stains the world.
But they are gracious, for this hell-deed has
In vain enwrapped itself in utter blackness;
’Spite all, it blazes through. Water will seek
No fiery transmutation when the mouth
Of thirst is stretched to drink it, nor will fire
Wane in extinction when the breath of hunger
Blows o’er it on the hearthstone—nay, oh nay,