The Great Wall of China

Human nature, essentially changeable, unstable as the dust, can endure itself no restraint; if it bends it soon begins to tear madly as it bonds, until it rends everything asunder, the wall, the bonds, its very self...My inquiry is purely historical, no lightening flashes from the long since vanished thunderclouds...The limits which my capacity for thought imposes are narrow enough, but the province to be traversed here is infinite.