Human desire and sins figure prominently in Mauriac's novels in which most characters have suffered from the fear of losing love and being alone and have been psychologically distorted and tortured by the corrupted social structure. Therefore, they fall into despair with empty spirit and alienated faith. In view of this, Mauriac focuses on themes of resistance vs. surrender, loftiness vs. lowliness, and forgiveness vs. salvation in pursuit of the significance of life. In addition, his delicate description of humanity leaves much room for his readers to think of the natural existence of feminist consciousness and females. Hence, his works reveal an outstanding aesthetic value and enlightening power.