Yet look again —
His horn is free,
Rising above chain, fence, and tree,
Free hymn of love; His horn
Bursts from his tranquil brow
Like a comet born;
Cleaves like a galley's prow
Into seas untorn;
Springs like a lily, white
From the Earth below;
Spirals, a bird in flight
To a longed-for height;
Or a fountain bright,
Spurting to light
Of early morn —
O luminous horn!

The Unicorn in Captivity (1955)