In Breaking Dawn, true love overcomes all obstacles. True love also leaves the characters no choice but to give theirs lives to save the people they love. Bella is willing to sacrifice her life out of love of her daughter, Renesmee. Jacob stands against his own werewolf pack to protect Bella and the Cullens. When Jacob imprints on Renesmee, he dedicates his life to her. After Bella transforms into a newborn vampire, her love for Edward remains stronger than her thirst for blood.
As with all the books in the Twilight series, Breaking Dawn pitches individual choice against traditionally-set rules and group pressure. Throughout the story, the characters decide to trust and to stand by their own choices. Bella opts to sacrifice her life to give birth to her daughter Renesmee, acting against Edward, Jacob, and the majority of the Cullen family. Jacob, on the other hand, fights against his brother werewolves because he loves Bella and because he sees the Cullens as his friends, not his enemies. The right choice, it seems, arises out of an evaluation of unique, individual circumstances, not set rules.
In the Twilight series, sex comes after marriage – at least according to Edward. So when Edward and Bella get married, they make love for the first time. Breaking Dawn links sex and danger, at least initially. Before Bella becomes a vampire, sex with Edward poses a serious threat to her. Edward is afraid that he'll accidentally kill Bella, and she does indeed wake up covered in bruises after they first have sex. However, Bella doesn't seem to mind. While Edward is afraid to hurt her, Bella comes up with all kinds of tactics to tempt him into continuing to sleep with her.
Breaking Dawn also explores sexuality as a sensual experience. Because vampire senses are superior, vampires are apparently able to enjoy their sexual relationships more deeply than humans can. At first, however, Bella wants to stay human, because she believes that as a newborn vampire, her thirst for blood will overshadow her physical attraction for her husband. She's surprised to find that after her transformation, her physical attraction for Edward actually increases, because her senses are now able to fully appreciate his body and his mind.
Pain and love are inextricably connected in Breaking Dawn. Characters suffer because their love isn't returned, they suffer because their loved ones are in pain, and they suffer from feeling too much love for another person. Yet, they all come to realize that feeling love is worth experiencing the pain that comes with it. For example, Jacob maintains his love for Bella until the end of her human life and into her new vampire life. And Bella endures the pain of her pregnancy and her following transformation because she loves her daughter.
Many characters in Breaking Dawn believe that it's worth sacrificing their lives for what they believe. Jacob is prepared to fight against his own werewolf brothers because he believes that the Cullens are not his enemies. Many of Cullen friends are ready to die for their belief that the Cullens are innocent of breaking any of the Volturi laws. The werewolves are willing to sacrifice their lives to fight the Volturi, because they believe that it's their mission to protect their land and their loved ones from vampires. All of these characters' willingness to sacrifice themselves make them noble as compared to the Volturi, who are mostly concerned with power.
Breaking Dawn explores the positive and negative consequences of the characters' transformations from human life to supernatural life. While Leah is strong and her speed is unmatched as a werewolf, she can't bear children. Bella, on the other hand, quickly overcomes the negative consequences of being a newborn vampire because she chose her transformation and had thought about it for a long time. Yet, she struggles with the fact that she poses a danger to her daughter, her human father, and humankind.
Warfare in Breaking Dawn revolves around war strategies rather than physical combat. The Volturi arrive in perfect formation to intimidate the Cullens. They use several strategies to draw the Cullens into starting a fight. Although Bella is physically the strongest vampire amongst the Cullens and their friends, it's her mental shield that causes the Volturi to withdraw. In the end, there is no war, and the Volturi and the Cullens can continue to coexist in peace.
Breaking Dawn explores the advantages and disadvantages of communicating through thoughts, rather than spoken words. While telepathy is immediate and covers long distances, it also leaves no privacy or way to hide your thoughts. Alice deserts the Cullens after she foresees the coming fight with the Volturi, because she knows that Aro's telepathy will allow him to use her mental gifts to his advantage against the Cullens. Bella, on the other hand, saves the Cullens and their friends by shielding their minds from the Volturi's offenses.
In Breaking Dawn, mental skills and mental strength prevail over physical strength. Although Bella is physically the strongest vampire in the Cullen family since she's a newborn, her inexperience as a fighter renders her useless against the strategic fighters of the Volturi army. On the other hand, her strength of mind and her ability to expand her mental shield around her family and friends eventually prevents a war with the Volturi. Plus, Bella possesses the mental strength to control her thirst for blood as a newborn vampire.
In Breaking Dawn, the human and the supernatural worlds meet, which changes the lives of the characters forever. After Bella turns into a vampire, she notices that her human memories are fading in the face of her far more complex experience of the vampire world. When Jacob exposes Charlie to the supernatural world around him, the man struggles between denial and his wish to know the whole truth.