Mark Timmons is a contemporary American philosopher at the University of Arizona, specializing in metaethics, moral epistemology, and normative theory. He is best known for defending a non-realist cognitivist position in metaethics, arguing that moral judgments can be truth-apt without requiring a robust metaphysical foundation in moral facts. His work bridges metaethical theory and normative ethics, with significant contributions to debates about moral realism, contextualism, and the nature of moral obligation.
Authored Morality Without Foundations (1999), defending non-realist cognitivism in metaethics
Developed a contextualist account of moral truth-aptness without metaphysical moral realism
Authored Conduct and Character, a widely used introduction to ethics and normative theory
Edited influential anthologies in metaethics and moral epistemology
Contributed systematic analysis of the relationship between normative and metaethical theory