No More Learning

How should not the poet doat
On its mystic tongue,
With its primeval memory,
Reporting what old           told
Of Merlin locked the harp within,--
Merlin paying the pain of sin,
Pent in a dungeon made of air,--
And some attain his voice to hear,
Words of pain and cries of fear,
But pillowed all on melody,
As fits the griefs of bards to be.