In book 19 of the Odysseus Penelope tells Odysseus the beggar "Our lives are much too brief... If a man is cruel by nature, cruel in action, the mortal world will call down curses on his head while he is alive, and all will mock his memory after death. But if the man is kind by nature, kind in action, his guests will carry what does this mean? his fame across the earth and people all will praise him from the hearth." what does she mean by this ?