Background: C. S. Lewis’s 1945 novel, That Hideous Strength, is often read as a science-fiction thriller or Christian allegory. However, its profound engagement with political and philosophical themes, particularly its critique of modernity's trajectory, warrants a more focused analysis within contemporary ethical and political discourse.

Objective: This article aims to analyze That Hideous Strength as a sophisticated defense of the Natural Law tradition against the rise of a "totalitarian imagination" fueled by scientism. We argue that Lewis stages a conflict between an objective moral order (the Tao) and a reductionist, technocratic worldview that seeks to conquer and redefine human nature.

Methods: The study employs a qualitative methodology of philosophical textual analysis. The narrative of That Hideous Strength [22] is examined through a theoretical framework informed by Lewis's non-fiction, particularly The Abolition of Man [12], the Natural Law philosophy of John Finnis [8, 9], and Michael Polanyi’s post-critical epistemology [18]. Key concepts such as scientism, Natural Law, and the totalitarian imagination are defined and applied to the novel's characters, institutions, and central conflict.

Results: The analysis reveals that the novel's antagonist, the National Institute of Co-ordinated Experiments (N.I.C.E.), serves as a literary embodiment of scientism's dehumanizing potential, pursuing a posthumanist agenda that Lewis equates with the "abolition of man." In contrast, the community of St. Anne's represents a society founded upon the principles of Natural Law, emphasizing moral virtue, tradition, and the integration of the material and spiritual realms. The narrative conflict is thus framed as a war between two fundamentally opposed conceptions of reality, knowledge, and the human good.

Conclusion: That Hideous Strength emerges as a prescient and enduring critique of the technocratic and totalitarian impulses inherent in a purely materialistic worldview. By grounding his defense of humanity in the classical-Christian concept of Natural Law, Lewis provides a vital intellectual and moral resource for navigating contemporary challenges related to bioethics, posthumanism, and the erosion of shared moral foundations.

C. S. Lewis, That Hideous Strength, Natural Law, Scientism

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