The crawling glaciers pierce me with the spears
Of their moon-freezing crystals, the bright chains
Eat with their burning cold into my bones.
Heaven's wingèd hound, polluting from thy lips
His beak in poison not his own, tears up
My heart; and shapeless sights come wandering by,
The ghastly people of the realm of dream,
Mocking me: and the Earthquake-fiends are charged
To wrench the rivets from my quivering wounds
When the rocks split and close again behind.
Percy Bysshe Shelley (1792-1822)
Prometheus was the Greek god of fire. It's said that he was a Titan who stole fire and was punished by Zeus. As punishment for his crime, Zeus chained him to a rock and sent an eagle out to eat his liver. Since the liver regrows itself, the eagle would go back every day and re-eat the liver. Eventually Prometheus was saved by Hercules who shot the eagle with an arrow.