"Once out of nature I shall never take
My bodily form from any natural thing,
But such a form as Grecian goldsmiths make
Of hammered gold and gold enamelling
To keep a drowsy Emperor awake,
Or set upon a golden bough to sing
To lords and ladies of Byzantium
Of what is past, or passing, or to come."
(Header and avatar images, photo of U-Ram Choe's sculpture "Custos Cavum". See it at https://www.youtube.com/watch?v=x0XD6CaAxl0)