This painting of a South American cowboy by Mauricio Rugendas is part of the special Vatican exhibit "Argentina, the Gaucho: Tradition, Art and Faith," which runs until June 16. (CNS/courtesy of the exhibit) By Carol GlatzCatholic News Service VATICAN CITY (CNS) -- Dressed in a woolen poncho, leather boots and silver spurs, the traditional gaucho was the cowboy of Argentina's immense plains, herding cattle and living a simple, hard life far from family and close to nature. Though a little rough around the edges, gauchos were generally known to be respectful, loyal, honest and proud, rooted to a code...