Abstract
This paper attempts to show that Charles Taylor’s persuasive and expansive phenomenology, developed primarily in his Sources of the Self, ultimately depends upon an ontology of the human person that remains undeveloped, as he often admits. His fundamentalphilosophical claims stand finally as postulates of practical reason, which nevertheless depend upon a dialogical practice that is grounded in the dialogical nature of the human person. This phenomenological and ethical approach raises persistent epistemological and metaphysical questions. What Taylor does not admit, and what this paper will propose in his stead, is that a more systematic metaphysics in the existential Thomist tradition can help support philosophically both his explicit and implicit ontological claims regarding the nature of the human person