John A. Keller

John A. Keller is an Associate Professor in the Department of Philosophy at Saint Joseph's University, holding the Rev. Joseph S. Hogan Chair. He specializes in metaphysics, epistemology, philosophy of language, and philosophy of religion. His work emphasizes the method of paraphrase in philosophical inquiry, as seen in his contributions to The Routledge Handbook of Properties (2024) and Oxford Studies in Metaphysics (2015). Keller's research explores topics such as the symmetry objection in metaphysics, linguistic instrumentalism, and theological anti-realism.

He earned his Ph.D. from the University of Notre Dame under Peter van Inwagen, focusing on paraphrase in philosophical argumentation. His edited volume Being, Freedom, and Method: Themes from van Inwagen (2017) critically engages with van Inwagen's influential ideas. Recent publications include work on omnisubjectivity (2025) and argumentative success (2025).

Keller teaches courses ranging from logic and metaphysics to philosophy of religion and ethics, with recent iterations in Spring 2025. His teaching emphasizes foundational topics such as the existence of God, freedom and determinism, and the philosophy of human nature.

While no scientific awards are explicitly mentioned, his academic contributions reflect sustained engagement with core philosophical debates. His research spans both theoretical and applied domains, including reviews of prominent theological works and collaborative projects with Lorraine Juliano Keller on linguistic and metaphysical themes.