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2017 | 6 | 2 | 221-248

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St. Thomas Aquinas and John Locke on Natural Law


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John Locke’s natural law theory has frequently been conceived as a continuation of the Thomistic tradition and as sound basis for human rights as universally binding. This paper concludes that this is not the case. Unlike Aquinas’ metaphysical realism, Locke’s empiricism and nominalism make it impossible for us to know our human nature, our exclusively human goods, and telos—thereby undermining the sound foundations of the exceptionless moral precepts of natural law. Whereas Aquinas defines the good as that which is perfective and fulfilling of human nature, Locke identifies the good with pleasure, which leads to subjectivism. While both Aquinas and Locke argue that God is the origin and foundation of the binding force of natural law, Locke’s voluntarism is incompatible with the ruling nature of law. Consequently, unlike Aquinas, Locke’s theory lacks the metaphysical foundations for universal human rights.








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  • Holy Apostles College and Seminary, Cromwell, CT, USA


  • Aquinas, St. Thomas. The Division and Methods of the Sciences: Questions V and VI of His Commentary on the De Trinitate of Boethius. Trans. Armand Maurer. Toronto: Pontifical Institute of Mediaeval Studies, 1986.
  • Byrne, James W. “The Basis of the Natural Law in Locke’s Philosophy.” The Catholic Lawyer 10: 1 (2016): 55-64.
  • Forde, Steven. “Natural Law, Theology, and Morality.” American Journal of Political Science 45: 2 (2001): 396-409.
  • Haan, Daniel D. De. “Perception and the Vis Cogitativa: A Thomistic Analysis of Aspectual, Actional, and Affectional Percepts.” American Catholic Philosophical Quarterly 88: 3 (2014): 397-437.
  • Hancey, James O. “John Locke and the Law of Nature.” Political Theory 4: 4 (1976): 439-454.
  • Harpham, Edward J. “Natural Law and Early Liberal Economic Thought: A Reconsideration of Locke’s Theories of Value.” Social Science Quarterly 65: 4 (1984): 966-974.
  • Leyden, W. von. “John Locke and Natural Law.” Philosophy 31: 116 (1956): 23-35.
  • Locke, John. Essays on the Law of Nature.Ed. W. von Leyden.Oxford: Clarendon Press, 1958.
  • Maritain, Jacques. Natural Law: Reflections on Theory and Practice. Ed. William Sweet. South Bend, IN: St. Augustine’s Press, 2001.
  • Mathewson, Mark D. “John Locke and the Problems of Moral Knowledge.” Pacific Philosophical Quarterly 87: 4 (2006): 509-526.
  • Pieper, Josef. Living the Truth: The Truth of All Things and Reality and the Good. San Francisco: Ignatius Press, 1989.
  • Redpath, Peter A. “The Essential Connection between Modern Science and Utopian Socialism.” Studia Gilsoniana 3 (2014): 203-220.
  • Redpath, Peter A. “Thomist Humanism, Realism, and Retrieving Philosophy in Our Time.” Instituto Universitario Virtual Santo Tomás. Fundación Balmesiana—Universitat Abat Oliba CEU, 2003, 1-9.
  • Rossiter, Elliot. “Hedonism and Natural Law in Locke’s Moral Philosophy.” Journal of the History of Philosophy 54: 2 (2016): 203-225.
  • Aquinas, St. Thomas. Commentary on the Nicomachean Ethics. Trans. C. I. Litzinger, O.P. Chicago: Henry Regnery Company, 1964. Http://dhspriory.org/thomas /english/Ethics1.htm#1, accessed on Nov 21, 2016
  • Aquinas, St. Thomas. Summa Theologiae. Trans. Fathers of the English Dominican Province 2d ed. (1920). Http://www.newadvent.org/summa/, accessed on Nov 28, 2016.
  • Locke, John. An Essay Concerning Human Understanding, Vol. 1. In The Works of John Locke in Nine Volumes. London: Rivington, 1824. Http://oll.libertyfund. org/titles/761#Locke_0128-01_206, accessed on Nov 30, 2016.
  • Locke, John. Economic Writings and Two Treatises of Government (1691), Vol. 4. In The Works of John Locke in Nine Volumes. London: Rivington, 1824. Http:// oll.libertyfund.org/titles/763#Locke_0128-04_692, accessed on Nov 30, 2016.
  • Locke, John. The Reasonableness of Christianity as Delivered in the Scriptures, Vol. 6. In The Works of John Locke in Nine Volumes. London: Rivington, 1824. Http://oll.libertyfund.org/titles/1438, accessed on Dec 8, 2016.
  • Redpath, Peter A. “The Homeschool Renaissance and the Battle of the Arts.” Classical Homeschooling Magazine 2, June 2001. Http:// www.angelicum.net/classical-homeschooling-magazine/second-issue/the-homeschool-renaissance-and-the-battle-of-the-arts-by-peter-a-redpath/, accessed on Nov 30, 2016.

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