The sky of brightest gray seems dark
  To one whose sky was ever white.
To one who never knew a spark,
  Thro' all his life, of love or light,
  The grayest cloud seems over-bright.

The robin sounds a beggar's note
  Where one the nightingale has heard,
But he for whom no silver throat
  Its liquid music ever stirred,
  Deems robin still the sweetest bird.

This work was published before January 1, 1925, and is in the public domain worldwide because the author died at least 100 years ago.