In Cormac McCarthy's "Meridian of Blood," the narrative explores the complexities surrounding ethical judgments and the absence of clear criteria to assess morality. The text suggests that determining what is right or wrong is often subjective and varies based on individual perspectives and contexts, leading to ambiguities in ethical reasoning.

McCarthy's work prompts readers to reflect on the nature of morality, highlighting that the absence of definitive measures for goodness or evil complicates our understanding of ethical dilemmas. This exploration encourages a deeper examination of human behavior and the motivations that drive individuals to make moral choices.