Re-thinking Truth: Assessing Heidegger's critique of Aquinas in light of Vallicella's critique of Heidegger

In this paper I argue that Heidegger's critique of Aquinas on truth must be seen in light of Vallicella's critique of Heidegger. Heidegger criticized Aquinas for allegedly placing truth in the 'subjectivity' of the human mind via correspondence (adequatio). While the accuracy of this reading of Aquinas is highly contested, the criticism itself has sometimes been turned back upon Heidegger. In three forgotten articles in the 1980s, William Vallicella contended that Heidegger reduces Being to truth, and truth to the alleged 'subjectivity' of Dasein. Though Vallicella garnered some minimal attention at the time, his argument was soon forgotten, along with its potential implications for Heidegger's criticism of Aquinas. This paper will first establish the nature of Heidegger's critique of Aquinas, followed by Vallicella's critique of Heidegger, evaluating the former in light of the latter. It will be shown that Heidegger critiques Thomas for a mistake he does not make, then makes that same mistake himself, only to retreat to a position similar to what Thomas actually holds, but in a way that solves nothing, for he lacks Thomas' anchor in a divine mind. These points will coalesce in the ultimate conclusion that Vallicella can be used to both undermine Heidegger's critique and undergird the value of Aquinas' position on truth.