Marco Polo describes a bridge with each stone one by one. “And which is the stone that carries the bridge?” asks Kublai Khan. “It's not this stone or that stone that carries the bridge, it's the arch of the stones,” says Marco. Kublai Khan remains silent for a while, thinking. Then he adds: “Why do you keep telling me about the stones? The only thing that interests me is the belt.” Marco replies: "No stones, no arch." Italo Calvino "Invisible Cities"
