Proof as Sign, Conversion as Condition
A Lonerganian Meta-Apologetics After Insight 19
Abstract
Lonergan’s chapter 19 “proof,” in Insight, for God is typically assessed as a putative demonstration whose success rises or falls with the minor premise that “the real is completely intelligible.” Yet both the structure of Insight (proof as a “set of signs” requiring the reader’s self‑performance of rational judgment) and Lonergan’s later methodological turn (proof presupposes a horizon that cannot itself be proved) suggest that the apologetically decisive contribution of Insight 19 is not a freestanding inference but a meta‑apologetic, that is, an account of the normative conditions under which any natural‑theological proof can function as evidence. This article argues that Lonergan offers a two‑level model of apologetic rationality. On the first level, proofs function as instruments of clarification and as invitations to grasp a virtually unconditioned. On the second level, their cogency is conditioned immediately by intellectual conversion and, in the later Lonergan, within the fuller horizon shaped by moral and religious conversion. Interpreted this way, Insight 19 is not discarded by later Lonergan but re‑situated. It becomes a diagnostic and constructive tool within method, capable of exposing counterpositions and stabilizing conversion, without pretending to generate a horizon ex nihilo.
References
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Tyrrell, Bernard. 1974. Bernard Lonergan’s Philosophy of God. Notre Dame, IN: University of Notre Dame Press.Dupré, Louis. 1972. “The Cosmological Argument after Kant.” International Journal for Philosophy of Religion 3 (3): 131–45.
Hepburn, Ronald. 1973. “Transcendental Method: Lonergan’s Arguments for the Existence of God.” Theoria to Theory 3 (7): 46–50.
Jaramillo, Alejandro. 2007. “The Necessity of Raising the Questions of God: Aquinas and Lonergan on the Quest after Complete Intelligibility.” The Thomist 71 (2): 221–67.
Lonergan, Bernard. 1992. Insight: A Study of Human Understanding. Vol. 3 of Collected Works of Bernard Lonergan. Toronto: University of Toronto Press.
—. 2004. Philosophical and Theological Papers 1965–1980. Vol. 17 of Collected Works of Bernard Lonergan. Toronto: University of Toronto Press.
—. 2017. Method in Theology. Vol. 14 of Collected Works of Bernard Lonergan. Toronto: University of Toronto Press.
Rojka, Luboš. 2008. “Human Authenticity and the Question of God in the Philosophy of Bernard Lonergan.” Forum Philosophicum 13 (1): 31–49. https://doi.org/10.5840/forphil20081313.
Spitzer, Robert J., S.J. 2010. New Proofs for the Existence of God: Contributions of Contemporary Physics and Philosophy. Grand Rapids, MI: B. Eerdmans Publishing Co.
—. 2014. “Philosophical Proof of God: Derived from Principles in Bernard Lonergan’s Insight.” Magis Center of Reason and Faith, May. Accessed April 13, 2026. https://www.magiscenter.com/blog/philosophical‑proof‑of‑god‑derived‑from‑principles‑in‑bernard‑lonergans‑insight.
St. Amour, Paul. 2010. “Bernard Lonergan on Affirmation of the Existence of God.” Analecta Hermeneutica 2.
Tyrrell, Bernard. 1974. Bernard Lonergan’s Philosophy of God. Notre Dame, IN: University of Notre Dame Press.
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