In Cormac McCarthy's "Cities of the Plain," the narrative explores the complexities of human existence in a world shrouded in uncertainty and ambiguity. The story unfolds against a backdrop where characters grapple with their destinies, underscoring the tension between knowledge and the unknown. This illustrates the idea that when everything is known, the richness and depth of storytelling diminishes, as there would be no uncertainties or conflicts to propel the narrative forward.

The quote, "where all is known, no narrative is possible," emphasizes that the essence of storytelling lies in the exploration of what is not understood. In this novel, McCarthy delves into the human condition, revealing how the characters navigate a landscape filled with moral dilemmas and unresolvable tensions, which ultimately enriches the narrative. It is through these uncertainties that the characters find meaning and connection, demonstrating that narratives thrive on the complexities of life rather than on absolute truths.