One, Pablo Picasso, is the undisputed master of cubism and modern art; the other, Nicolas Poussin, is the master of classicism. Two artists, two different styles but a common theme that runs through the history of men: terror. How to tell the terror? When Pablo Picasso decides to paint "Guernica", he becomes immersed in "The Massacre of the Innocents" by the French painter Nicolas Poussin, whose work he has always loved. Poussin gives a universal representation of the massacre inspired by a passage of the Gospel. Picasso will be inspired by it.