In Larry McMurtry's "Lonesome Dove," the character July reflects on a troubling realization about his life. He considers that he has reached a stage where the certainty and understanding he once possessed have all but disappeared. This sense of ambiguity underscores the themes of searching for meaning and grappling with uncertainty that permeate the narrative.

This moment of introspection reveals July's internal struggle as he confronts the complexities of existence and his place within it. The feeling of encountering the unknown resonates with many, highlighting the universal human experience of questioning one’s path and purpose amidst life's unpredictability.