text: the sculpture of Two Slaves by Michelangelo ; Leonardo da Vinci 's Mona Lisa ( La Joconde ) and Virgin of the Rocks ; Titian 's voluptuous Woman at Her Toilet and somber Entombment of Christ ; the poignant Old Man and His Grandson of Ghirlandaio .
  
  ###
  
  Titian was never a painter , he didn 't knew how to paint .