Who has never heard of the Mona Lisa, one of humanity's jewels? Leonardo Da Vinci was an outstanding painter, one of the greatest masters of the Dutch school, an emblematic figure of the Renaissance, tirelessly seeking to approach the curves and reliefs of nature itself. Despite the relatively recent awareness and admiration for Leonardo as a scientist and inventor, his immense fame for most of the last four hundred years has rested on his achievements as a painter and on a handful of works, authenticated or attributed to him, which have been considered among the most beautiful masterpieces ever created. These paintings are famous for many reasons and qualities that have been much imitated by students and discussed at great length by connoisseurs and critics.