Paradox Poem by Willa Sibert Cather

I KNEW them both upon Miranda's isle,
Which is of youth a sea-bound seigniory:
Misshapen Caliban, so seeming vile,
And Ariel, proud prince of minstrelsy,
Who did forsake the sunset for my tower
And like a star above my slumber burned.
The night was held in silver chains by power
Of melody, in which all longings yearned--
Star-grasping youth in one wild strain expressed,
Tender as dawn, insistent as the tide;
The heart of night and summer stood confessed.
I rose aglow and flung the lattice wide--
Ah, jest of art, what mockery and pang!
Alack, it was poor Caliban who sang.