Recovering Reality: Étienne Gilson & the Metaphysics of Evangelization

It should be obvious to anyone paying attention that we live in an age that doubts reality, that trusts perception over being, and emotion over truth. Unlike disagreements of the past, when arguments were over what is true, we now disagree about whether truth even exists. Within what philosopher Charles Taylor calls the immanent frame, facts bend to feelings, and words give way to will. The world, it seems, has become raw material for the self’s endless project of reinvention. Beneath the familiar symptoms of relativism and expressive individualism, though, lies the deeper and more neglected malady of the loss of confidence that being is real, intelligible, and good. This is a dangerous cultural drift, to be sure, but it is, at root, a long-simmering metaphysical crisis.

The great French philosopher and historian Étienne Gilson (1884-1978) recognized that an understanding of reality supports not only philosophical and theological health but every facet of proper human existence, including politics, society, and culture. For Gilson, modern philosophy’s substitution of thought for being is a sickness that can be cured only by recovering the Thomistic act of being (esse) and the profound conviction that existence is the primary and most fundamental gift of Him who is Being itself. Truth is not only real; ultimately, it consists in our conformity to this given reality. If the Church is to evangelize a culture that doubts reality, she must draw deeply from the living source of Gilson’s methodical realism, a philosophical approach grounded in the Thomistic act of being, in which existence is received as gift, and truth is lived as fidelity to what is.

The Crisis of Being

Since René Descartes in the 17th century, the modern mind has turned inward, replacing existence with ideas, and severing thought from the real. What had once been metaphysics, the study of being qua being, was reduced to epistemology, the study of how the mind knows. As Gilson notes, the project that created modern philosophy was “doomed to fail” when its authors substituted “the fundamental concepts of any particular science for those of metaphysics. Theology, logic, physics, biology, psychology, sociology, economics, are fully competent to solve their own problems.” However, he continued, as metaphysics “aims at transcending all particular knowledge, no particular science is competent to either solve metaphysical problems, or to judge their metaphysical solutions.” When philosophy mistakes the map for the territory, being vanishes behind the subject, and skepticism follows. The result is a collapse of shared rational ground, yielding not only philosophical confusion but a cultural vertigo in which law drifts toward personal will, medicine becomes desire-management, and civic education turns into self-curation. Even theology, unmoored from revelation, risks becoming autobiography. At its core, modernity’s error is not simply an intellectual mistake but an ontological catastrophe — a failure to see that true knowing begins in receiving what is given, not inventing what is taken.

The crisis of being in which we find ourselves today began nearly four centuries ago, when philosophy made consciousness, rather than existence, the starting point of thought. With Descartes, the mind, once open to receiving the real, turned inward to secure itself and, in so doing, lost the world. David Hume reduced causality to habit, Immanuel Kant confined nature to the mind’s own categories, and Auguste Comte dismissed metaphysics as illusion. In each case, the horizon of the real was narrowed — first to expectation, then to construction, and finally to the measurable alone. By the time Friedrich Nietzsche declared truth to be a creation of the human will, a philosophy that began in the mind had ended there, self-assured but homeless. This erosion of certainty and truth left modern man vulnerable to emerging materialist ideologies.