The quote reflects a sense of regret and uncertainty experienced by the character in "Lonesome Dove." It suggests that, despite his intentions, he feels he has erred in his interactions with both the Indian and the woman. This feeling of having made a mistake underscores the complexities of human relationships and the unintended consequences of actions, highlighting a theme of remorse that resonates throughout the narrative.

The character's feeling of incompleteness hints at a deeper struggle with personal fulfillment and connection. The inherent tension in his experiences suggests that relationships are fraught with misunderstandings and that even well-meaning individuals can leave others feeling wronged. This theme is prevalent throughout Larry McMurtry's work, as he explores the intricacies of social bonds and the potential for miscommunication in both love and friendship.