In the novel "Eva" by Arturo Pérez-Reverte, the character Falcó exhibits a knowing smile that reflects his understanding of humanity's darker traits. This smile suggests a deep-seated confidence in the innate cruelty, foolishness, and greed that people often display.
Falcó’s demeanor portrays a complicated relationship with the world around him, seeing both its beauty and its flaws. His experiences have shaped a cynical view of human nature, allowing him to navigate complex situations with a sense of certainty about the motivations that drive people's actions.