This paper demonstrates the underlying assumptions of Germain Grisez’s critique of the perverted faculty argument. In the first place, it establishes what formulations of the principle Grisez considered in his criticism (those of Father Henry Davis) and what his arguments are. Afterward it establishes his assumptions: (a) a latent ethical logicism; (b) a pragmatist conception of choice and the good; (c) a mistaken metaphysics of being, the good and the theoretical and practical principles. It underlines John Dewey’s influence. Lastly, it defends the classical formulation of the perverted faculty argument and even its rendition by Father Davis.
Last July, the II International Congress of Tomista Philosophy took place, organized by the Center for Tomistic Studies of the Santo Tomás University of Santiago, Chile. As part of the events, the first volume of the Latin-Castilian bilingual edition of the Commentary on Psalms was presented. First, Professor Enrique Alarcón, editor of the Latin text and author of the Introduction, intervened. Professor Carlos A. Casanova spoke later, responsible for the Spanish version and the text notes. We then offer the presentation of Professor Casanova and the text of Professor Alarcón’s Introduction.