He drains off life by drops, and, deaf to cries,
Examines every spirit as it flies:
He studies torment, dives in mortal woe,
To rouse up every pang repeats his blow;
Each rising agony, each dreadful grace,
Yet warm transplanting to his Saviour's face.
Oh glorious theft! oh nobly wicked draught!
With its full charge of death each feature fraught,
Such wondrous force the magic colours boast,
From his own skill he starts in horror lost.