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The National Catholic Bioethics Quarterly

Volume 19, Issue 2, Summer 2019

Defense of the New Natual Law

E. Christian Brugger
Pages 181-202

St. Thomas’s Natural Law Theory

Fifty years of debate have strengthened Germain Grisez’s 1965 interpretation of St. Thomas Aquinas’s famous article on the natural law in Summa theologiae I-II.94.2. Revisiting Grisez’s argument in light of these developments reveals that his “gerundive interpretation” of the first principle of practical reason is not only Thomistic, but essentially Aquinas’s interpretation.