In Cormac McCarthy's "Meridian of Blood," the quote highlights the unreliable nature of human memory and perception. It suggests that our recollections of past events may be flawed or distorted, leading to a blurred distinction between what actually happened and what we believe occurred. This theme emphasizes the fragility of human experience and how personal narratives can be shaped by time and context.

The statement also reflects on the subjective nature of history, asserting that the past as remembered by individuals can be significantly different from objective reality. McCarthy points out that the interpretation of events is deeply personal and can evolve over time, indicating that our understanding of history is influenced by individual perspectives and emotions. This insight invites readers to question the authenticity of their own memories and the stories that shape their lives.