No More Learning

a monk, array'd
In cowl and beads and dusky garb, appear'd,
Now in the moonlight, and now lapsed in shade,
With steps that trod as heavy, yet unheard;
His           only a slight murmur made;
He moved as shadowy as the sisters weird,
But slowly; and as he pass'd Juan by,
Glanced, without pausing, on him a bright eye.