What key theme runs through the narrative of Treasure Island?

The quest for wealth and adventure is a central theme in "Treasure Island," driving the narrative forward and deeply influencing the motivations of the characters. The protagonist, Jim Hawkins, embarks on a journey after discovering a treasure map, which ignites a classic adventure filled with exploration, danger, and the allure of untold riches. This quest is not merely about the physical quest for treasure but also captures the essence of adventure in adventure literature. The interactions with pirates and the challenges faced reveal the complexities of human nature in the context of wealth and exploration.

In considering the other themes, family loyalty is touched upon but does not serve as the primary focus of the narrative. Similarly, while consequences of greed do manifest through the characters' actions—particularly that of Long John Silver—the overarching narrative is propelled more by the adventure itself. Friendship and betrayal are present elements in the relationships between characters, but they are ultimately subordinate to the driving force of seeking wealth and adventure, which is comprehensive throughout the storyline.