Thomas Nagel (born 1937) is an American philosopher best known for his work in philosophy of mind, ethics, and political philosophy. He is widely regarded as one of the most influential contemporary defenders of moral realism and as a major critic of reductive materialism in explanations of consciousness and value. Nagel’s work occupies a distinctive position between analytic philosophy and broader metaphysical inquiry, arguing that subjective experience and objective reason both reveal aspects of reality that cannot be fully captured by physicalist accounts.
Nagel became internationally famous with his 1974 paper “What Is It Like to Be a Bat?”, which argued that consciousness possesses an irreducibly subjective character. This argument challenges reductionist physicalism by showing that no purely third-person scientific description can fully capture subjective experience (qualia). Even complete physical knowledge, he argued, would leave out the lived perspective of the subject. For a framework such as 2PC, Nagel’s argument is significant because it establishes a structural limitation of purely physical explanations: consciousness cannot be eliminated or translated entirely into objective description without loss of explanatory content. Nagel’s later work, especially Mind and Cosmos (2012), develops a sustained critique of what he called neo-Darwinian materialism — the view that mind, consciousness, reason, and value are accidental by-products of blind physical processes.