But the raven, sitting lonely on the placid bust, spoke only,
That one word, as if his soul in that one word he did outpour.
Nothing further then he uttered - not a feather then he fluttered -
Till I scarcely more than muttered "Other friends have flown before -
On the morrow he will leave me, as my hopes have flown before."
Then the bird said, "Nevermore."

Edgar Poe. Raven