"Our nature," said the Priest, in mild reply,
"Angels may weigh and fathom: they perceive,
With undistempered and unclouded spirit,
The object as it is; but, for ourselves,
That speculative height we may not reach.
The good and evil are our own; and we
Are that which we would contemplate from far.
Knowledge, for us, is difficult to gain—
Is difficult to gain, and hard to keep—
As virtue's self; like virtue is beset