It was very dark; but in the murky sky there were masses of cloud which shone with a lurid light, like monstrous heaps of copper that had been heated in a furnace, and were growing cold. – Charles Dickens, Martin Chuzzlewit, Chapter XLII

The sky, a perfect empty canvas, offers clouds nonetheless. They shift and drift and beg interpretation… such is the nature of art. – Jeb Dickerson, jebdickerson.com

…gorgeous bright blue sky with some cloudacious beautiness on the fringe… – Terri Guillemets, “Out the Upper Window,” 2009

Those playful fancies of the mighty sky. – Albert Smith (clouds)