By Cynthia R. Nielsen
Having examined Calvin’s view on faith, we now turn to Aquinas. As is commonplace with St. Thomas, he takes his starting point from St. Augustine, who defines believing as “thinking with assent” ( cum assentione cogitare). Given his 13th century context and the categories that were now operative as a result of the influx of the translated texts of Aristotle, Aquinas seeks to “update” Augustine’s description and to give it more precision. “To think” ( cogitare) in this context is qualified as an act of intellectual consideration “that is accompanied by a certain searching prior to reaching complete understanding in the certitude of seeing.” That is, “thinking” ( cogitatio) in this more narrow sense “describes the process of the mind searching before reaching its term in the full vision of a truth” (ST, 2a2ae. 2, 1). So the “thinking” associated with “believing” in relation to faith is understood as a state in which one is still searching, pondering, and questioning. In contrast, when one has arrived at “knowledge” there is a lack of puzzlement because the mind has found a place of rest. “Knowledge for Aquinas entails the possession of a firm assent, free from pondering” (Vos, p. 11). Thus, we see that for Aquinas, there is a sharp distinction between belief and knowledge. Faith is not parsed out as knowledge (as we saw in Calvin), but rather is defined as an act of belief. However, there are further distinctions and qualifications to be made. One might assume that since faith is correlated with belief and since belief involves a kind of puzzlement and unrest, then perhaps belief is more like doubt or opinion. St. Thomas addresses this issue, arguing that faith is to be distinguished from doubt and opinion because it involves a kind of certainty that the other two lack. Though believers continue to ponder and question their beliefs which is similar to what takes place when one doubts or holds a mere opinion,
“[t]he act of believing … is firmly attached to one alternative and in this respect the believer is in the same state of mind as one who has science [scientia] or understanding. Yet the believer’s knowledge is not completed by a clear vision, and in this respect he is like one having a doubt, a suspicion, or an opinion. To ponder with assent is, then, distinctive of the believer” (ST, 2a2ae. 2, 1).
Given that the believer’s knowledge is not the result of understanding (a “clear vision”), St. Thomas goes on to explain that assent is based on a voluntary choice. One way that the mind assents comes as the result of the intellect “being actuated by the object to which it assents.” This is not the way in which the believer assents because the object in view is God’s essence, which is not known to us in this life. However, there is a second way of assent “through some voluntary choice that influences the mind in favor of one alternative rather than the other” (ST, 2a2ae. 1, 4). In other words, because in this life we cannot know God’s essence and thus cannot assent as a result of insufficient understanding, we can, however, assent by an act of the will. This is the kind of assent that faith involves—faith is the act in which the will moves the intellect to assent.
In addition, Aquinas distinguishes between the material object of faith, which is “believing in God” (credere deum), the formal object of faith, “believing God” (credere deo), and “believing unto God,” which describes the relation of faith to the will. God is both that which is known (the material object of faith) and the “medium through which faith’s material object is known” (the formal object of faith) [Vos, p. 12, 13]. What Aquinas wants to stress is that one assents to the truths of faith because these have been “revealed by God, and so faith rests upon the divine truth itself as the medium of its assent (ST, 2a2ae. 1, 1). Thus, for Aquinas, as well as Calvin, “faith is grounded in God’s own self-revelation” (Vos, p. 13). Moreover, and this is crucial for (Reformed) Protestants to see, according to St. Thomas, the human intellect does not hold to God by its own power and is in need of what Thomas calls the “light of faith” or “light of grace.” As Thomas explains, (note that here we have essentially the same distinction that Calvin highlighted when he spoke of our ability to know “earthly things” verses our lack when it comes to “heavenly things”),
“[t]he human intellect has a form, namely the intelligible light itself, which is sufficient of itself for the knowledge of certain intelligible realities, those, namely, acquaintance with which it can reach by way of sensible realities. But the human intellect cannot know more profound intelligible realities unless it is perfected by a stronger light, say the light of faith or prophecy; and this is called the light of grace, inasmuch as it supplements nature” (ST, 1a2ae. 109, 1).
For Thomas, as was the case with Calvin, faith involves trust—something like the trust involved between a student and a teacher or a child and a parent. A fiduciary element is necessary because the content of faith exceeds the scope of human reason, but such trust is not without warrant given the “object” of this truth, viz., God himself. (The church as a reliable authority also plays a role here as well; however, this is not my primary focus of my present inquiry).
As Vos points out, the “uniqueness of the formal object of theology” has “implications for the way in which theology is done,” and Aquinas is quite cognizant of this. “What is peculiar to this science’s knowledge is that it is about truth which comes through revelation, not through natural reasoning” (ST, 1a. 1, 6 ad 2m; emphasis added). Clearly, this science of sacred theology is unlike any other sciences, as its principles are rooted in divine revelation—“holy teaching assumes its principles from no human science, but from divine science” (ST, 6 ad 1m). Sacred theology is to be firmly founded on God’s knowledge, which we are able (or better, enabled) to know because God has revealed these truths to us. A consequence of Aquinas’ re-formulation of what a science is in his explication of the science of sacred theology is that it is absolutely acceptable to argue from authority in this science. On this point, St. Thomas writes,
“Argument from authority is the method most appropriate to this teaching in that its premises are held through revelation; consequently it has to accept the authority of those to whom revelation was made. Nor does this derogate from its dignity, for though weakest when based on what human beings have disclosed, the argument from authority is most forcible when based on what God has disclosed” (ST, 1a. 1, 8 ad 2m).
Thomas goes on to state that though the Fathers and the philosophers are of great benefit and helpful to the progress of theology, “our faith rests on the revelation made to the Prophets and Apostles who wrote the canonical books” (ST, 1a. 1, 8 ad 2m).
Lastly, Thomas speaks of “believing unto God,” which concerns the movement of the mind by the will. In the act of faith, the intellect indeed assents but the assent is due to the influence upon the mind of the will as noted above. Here we might inquire as to what moves the will to influence the intellect to assent? Again, to the surprise of many Protestants and perhaps some Roman Catholics, Calvin and Aquinas are one as to the source of this movement, viz., God and God alone. Quoting St. Thomas,
“As to assent to matters of faith, we can look to two types of cause. One is a cause that persuades from without, e.g., a miracle witnessed or a human appeal urging belief. No such cause is enough, however; one man believes and another does not, when both have seen the same miracle, heard the same preaching. Another kind of cause must therefore be present, an inner cause, one that influences a person inwardly to assent to the things of faith. The Pelagians thought this cause to be free will alone and therefore taught that the beginning of faith is from us, i.e., that it is from our own resources that we are ready to assent to matters of faith, and that the finishing of faith is from God, i.e., that it is he who proposes the things we must believe. This is a false doctrine. The reason: since in assenting to the things of faith a person is raised above his own nature, he has this assent from a supernatural source influencing him; this source is God. The assent of faith, which is its principal act, therefore, has as its cause God, moving us inwardly through grace” (ST 2a2ae. 6, 1; emphases added).
For St. Thomas, then, apart from God’s grace, no one is able to embrace Him as Lord and Savior, as faith itself is a gift.
Bibliography
1. St. Thomas Aquinas. Summa Theologiae. Trans. Thomas Gilby et al. New York: McGraw-Hill, 1964-81.
2. Vos, Arvin. Aquinas, Calvin, and Contemporary Protestant Thought: Critique of Protestant Views on the Thought of Thomas Aquinas. Grand Rapids: Christian Univ. Press (a subsidiary of Eerdmans), 1985.