In the broadest sense of the term, “Thomism” refers to a set of ideas and principles, both in philosophy and theology that can be considered as derivations or representations of the thought of Thomas Aquinas. However, Thomism should not be considered as a mere conceptual body. It also represents a certain view and way of doing philosophy and theology. Alasdair MacIntyre, in his book Three Rival Versions of Moral Enquiry, argues that the Thomistic approach provides a coherent and skillful point (...) of view for dealing creatively and critically with opposing views, contrasting this approach with the encyclopedic and the genealogical approaches. The former imposes a single worldview, enclosing knowledge and “truth” in a monolithic structure of “progress,” while the latter, following Nietzsche, devalues and relativizes knowledge, reducing it to a multiplicity of perspectives, each with its own claims to truth, leading to incommensurability and the consequent subjugation of “truth” to the law of the strongest. On the other hand, Thomists have adopted, from the end of the thirteenth century to the present day, different styles and ways of thinking while maintaining dialogue with their “predecessors” and at the same time with their contemporaries, that is, Thomists are capable of what MacIntyre called the “rationality of tradition”. (shrink)

Truth is one of the main concepts of Philosophy, some even consider it the most important of all (W. Künne). This concept is also a foundation for other philosophical concepts. Some of them even depend intrinsically on it, such as the concepts of belief (to believe in something is to believe this something is true), knowledge (if you know something then that something is true), fact (facts are what make our statements true), existence (true reality is the external world that (...) exists) and modality (there are propositions that can be true in all possible worlds), among many others. Truth is also a crucial concept for other domains. Science is said to be the search for the truth of the Natural World and the good life is said to be the pursuit of the good (Aristotle). If one considers that the good and the just are objects of knowledge (R. Campbell), then, there could be no good or justice without truth, insofar as knowledge needs truth. Also, our confidence in the robustness of western political and social institutions has always rested on truth. Unfortunately, this basis, which is the foundation of trust and, therefore, of the robustness of our institutions, is being eroded by external forces, deniers and nihilists, by undermining the concept of Truth, endangering in that way the democratic model (H. Frankfurt). The troubled events we have recently experienced – the raise of populisms, conspiracy theories, pandemic skepticism, the conflict in Ukraine not only in the battleground but also in the info space – could, to some extent, make us question whether, in fact, there is still any theoretical interest in “truth”. As several authors have noted, it seems that today we live in a society of “post-truth” (A. Szakolczai) or “veritophobia” (A. Goldman), where lies are tolerated and facts ignored. Also, for this reason, understanding what truth is by reflecting on its nature and function, from the most sophisticated conceptual schemes to its most everyday uses, seems to be a philosophical task of the utmost importance. This is why the Revista Portuguesa de Filosofia has decided to dedicate this special issue to the subject of truth. (shrink)