What about the concrete block? It was the cheapest (and ugliest) thing in the building world. It lived mostly in the architectural gutter as an imitation of rock-faced stone. Why not see what could be done with that gutter rat? Steel rods cast inside the joints of the blocks themselves and the whole brought into some broad, practical scheme of general treatment, why would it not be fit for a new phase of our modern architecture? It might be permanent, noble beautiful.
– Frank Lloyd Wright
Frank Lloyd Wright: In the Realm of Ideas