The quote highlights the unique position of a libertine in society, suggesting that they embrace a freedom and boldness that others shy away from. This suggests that the libertine's choices and lifestyle reflect a certain courage or an ability to live authentically, which can be both admired and criticized by those who conform to societal norms.
Furthermore, the statement implies a contrast between libertines and more conventional individuals, emphasizing that some people may lack the qualities — such as confidence or desire for freedom — that enable a person to live a libertine lifestyle. The author, Arturo Pérez-Reverte, reflects on these differences to explore themes of morality, societal expectations, and personal choice.