What does "The Necklace" by Mauricio Moupassant reveal? What did that mean? What was the revelation?

The Necklace was a well-known novel that revealed the complexity and vanity of human nature by describing the story between the protagonist, Mathilde Darief, and her friend, John Thornton. The novel revealed the complexity and vanity of human nature. In order to buy a necklace for his mother, Mathilde did not hesitate to lie to his good friend John and hide the real price of the necklace. In the end, he got the necklace he wanted in this way. This plot showed the greed, vanity and selfishness of human nature, and also revealed the contradiction and guilt in Mathilde's heart. The novel also illustrated the preciousness of friendship. The friendship between Mathilde and John was based on sincerity and trust. Although Mathilde deceived John, John did not hate her in the end. Instead, he chose to forgive her and continue their friendship. This plot shows the value and respect of friendship and also reveals that people should cherish true friendship. The novel also teaches us that we should learn to think rationally. In the novel, Mathilde deceived her friends because of her vanity, but eventually she realized that her actions were wrong and felt guilty. This plot tells us that we should learn to think rationally, not just look at the beauty on the surface, but should deeply understand the essence of things to avoid making wrong decisions because of vanity. The Necklace is a novel that reveals the vanity and friendship of human nature. It deeply reflects the contradiction and complexity of human heart by telling the story between Mathilde and John. This novel tells us that we should cherish true friendship and think rationally to avoid making wrong decisions because of vanity.