Charles Godfrey Leland,
Legends of Florence: Collected from the People…
“ The ghost walks—always when the rent fails to come in, and there is no money in the treasury—cammina, cammina per un fil di spada—walks as straight as an acrobat on a rope. But I cannot give you a walking ghost of a rascal to every house, Signore. If all the knaves who made fortunes by trickery were to take to haunting our houses in Florence, they would have to lie ten in a bed, or live one hundred in a room, and ghosts, as you know, love to be alone. ”
