Aquinas's Shortest Way to God’s Existence, and How Darwinism Fits Within It | Fr. Stephen Brock
Feb 5, 2025
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Fr. Stephen Brock, a priest and professor of Medieval Philosophy at the Pontifical University of the Holy Cross, delves into Aquinas's argument for God's existence. He discusses how nature's goal-directed behavior suggests an underlying intelligence, despite lacking cognition. Brock highlights the tension between classical philosophy and Darwinism, proposing that both can coexist in understanding life's complexities. He uses the analogy of an archer and arrow to illustrate divine influence in nature, revealing a harmonious interplay between intellect and evolution.
Aquinas's argument for God's existence hinges on the idea that natural entities act purposefully under the direction of a governing intellect.
The compatibility between Aquinas's philosophy and Darwinian evolution lies in recognizing inherent tendencies in nature despite randomness and chance events.
Deep dives
The Fifth Way: Proving God's Existence
Thomas Aquinas presents the fifth way to prove God's existence, focusing on the governance of natural things. He describes governance as directing activities toward a purpose, emphasizing that certain natural bodies, like rocks and plants, function with a goal despite lacking cognition. This observation indicates that they act consistently and in a manner that suggests an overseeing intellect or governor, which implies a divine nature. Unlike arguments based on beauty or order in the universe, this approach hones in on the purposeful actions of simple natural entities.
Tendencies and Goals in Nature
Aquinas asserts that natural bodies exhibit tendencies toward their specific goals, evident in their regular, predictable behaviors. He explains that consistent actions imply a guiding principle or intelligence, which governs the tendencies towards achieving what is best for each type of being. This leads to the understanding that though some outcomes may fail due to chance, the inherent tendencies still reflect a design. Thus, despite the presence of randomness, the overarching direction aligns with the idea of a governing intelligence steering natural processes toward beneficial results.
The Role of Intellect in Natural Actions
Aquinas argues that non-cognitive natural entities cannot act toward a goal without being directed by something with cognition, exemplified by his analogy of an arrow needing an archer. The archer's intention channels the arrow toward its target, indicating that cognition is necessary for purposeful action, further stressing the need for an intellect directing the actions of natural beings. He distinguishes between mere sensation and intellect, contending that true governance requires an understanding of proportions between means and ends. This highlights that while natural entities act within their tendencies, they do so under the influence of a higher intelligence, rather than through their own awareness.
Compatibility with Darwinism
The discussion explores the compatibility between Aquinas' argument for God and Darwinian theories of evolution. While some may argue that Darwinism contradicts the idea of tendencies toward good, Aquinas maintains that chance events do not negate the existence of governing principles in nature. Extinction and mutation processes reflect the natural best efforts of species to survive, even when outcomes are unfavorable. Thus, both Aquinas and Darwinism recognize inherent tendencies in entities, but Aquinas expands this vision to encompass all things as guided by divine intellect, arguing for a broader view of existence and governance.
Stephen L. Brock is a priest of the Prelature of Opus Dei (ordained 1992). He is Ordinary Professor of Medieval Philosophy at the Pontifical University of the Holy Cross in Rome, where he began teaching in 1990. Since 2008 he has been an Ordinary Member of the Pontifical Academy of St. Thomas Aquinas. Since 2017 he has been a visiting professor in the Department of Philosophy of the University of Chicago. He is the author of Action & Conduct: Thomas Aquinas and the Theory of Action (T&T Clark, 1998); The Philosophy of Saint Thomas Aquinas: A Sketch (Wipf & Stock, 2015); The Light that Binds: a Study in Thomas Aquinas's Metaphysics of Natural Law (Wipf & Stock, 2020); and numerous articles on various aspects of Aquinas’s thought.
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