INVISIBLE STONES
"Marco
Polo describes a bridge, stone by stone.
-But which is the stone that holds up the bridge?- asks
-The bridge is not held up by this or that one stone,- answers Marco, -but by
the line of
the arch
that they form.
the
stones? It is only the arch that I am interested in.
Polo answers: -Without stones there is no arch."
(from “The Invisible Cities”, by
Italo Calvino)