This theme is central to the novel. The Corleones operate under a strict code of loyalty and honor within their family. This loyalty, however, is often tested as the family business clashes with personal desires and morals. Michael's initial reluctance to join the family business highlights this conflict, but as the story unfolds, he becomes increasingly entrenched in the family's web of loyalty and violence.

"The Godfather" paints a complex picture of power, showing its allure and its corrupting influence. Don Corleone wields power not just through violence, but also through favors and loyalty, showcasing the seductive nature of influence. However, the novel also illustrates the destructive consequences of unchecked power, as seen in the escalating violence and the moral compromises characters make in its pursuit.

Throughout the novel, the lines between justice and revenge become blurred. While the Corleones present themselves as arbiters of justice, particularly within their Italian-American community, their methods are often brutal and self-serving. This theme raises questions about the nature of true justice and the price of vengeance.