In 1793, man again thought to set up a barrier between himself and his past, and he shattered the art treasures of a thousand years and tore down' the cathedrals of Cambrai, Arras, and Avranches; he tore down Cluny, the greatest Romanesque church in the world, Cluny the civilizer, that had removed from agriculture its stigma as serfs' work. Man fancied that to shatter and demolish was to build.