"Once upon a midnight dreary, while I pondered, weak and weary,

Over many a quaint and curious volume of forgotten lore,

While I nodded, nearly napping, suddenly there came a tapping,

As of some one gently rapping, rapping at my chamber door.

“ ’Tis some visiter,” I muttered, “tapping at my chamber door —

Only this, and nothing more".

.... Quoth the raven: “Nevermore.”

Edgar Allan Poe, “The Raven”