Alasdair MacIntyre

Alasdair MacIntyre (1929–present) is a Scottish-born philosopher whose work has significantly influenced contemporary philosophy of religion and moral theology. Initially a Marxist, MacIntyre converted to Catholicism in the 1980s, profoundly shaping his philosophical trajectory. His landmark work "After Virtue" (1981) critiques modern moral philosophy and advocates for a return to Aristotelian virtue ethics within a Thomistic framework. MacIntyre argues that rational inquiry requires tradition-based contexts, challenging Enlightenment claims to universal reason. His critique of liberal individualism and defense of tradition-constituted rationality has important implications for natural theology and religious epistemology. In works like "Whose Justice? Which Rationality?" (1988) and "Three Rival Versions of Moral Enquiry" (1990), he develops a sophisticated account of how religious traditions can make truth claims while acknowledging historical contingency. His neo-Thomist philosophy provides resources for understanding God as the ultimate telos of human flourishing and knowledge.