In "Good Men," Arturo Pérez-Reverte explores the theme of how an all-encompassing religion can stifle growth and personal development. The narrative suggests that when a belief system is deeply ingrained in society, it can create limitations for individuals, often discouraging them from pursuing their own aspirations and happiness. This rigid adherence to religious doctrines can lead to a stagnant environment where questioning and innovation are not welcomed.

The author presents a critique of the ways in which such a dominant faith can overshadow personal freedoms and societal progress. By emphasizing the negative impacts of an all-pervasive religion, Pérez-Reverte highlights the importance of individual thought and the necessity for an open-minded approach in order to foster a thriving community. Ultimately, the book prompts readers to reflect on the influence of belief systems on personal and collective flourishing.