Evil is readily recognizable by its ugliness and by its fruits. Goodness is equally recognizable and its fruits are more lasting. The author does not preach, but his good characters exemplify in action the virtues of mercy, perseverance, generosity, and friendship. Sauron, Saruman, and the Ringwraiths all embody the vices of hatred, greed, and the thirst for power. The influence of Sauron on those who once were normal men demonstrates the pervasiveness of evil, as does the ugliness of Sauron's land, Mordor. While the destruction of Sauron and the Ringwraiths suggests that evil can be overcome, it does not imply that the destruction of a major source of evil eliminates all evil.