Abstract

Unlike being as act of being, being as true does not seem to belong to the object of metaphysics but only to that of logic. However, according to Aquinas it has a greater extension and universality than the act of being (and it is well konwn that universality is a characteristic of the object of metaphysics). For whereas being as act of being is a passio entis, namely a property of things, being as true is, according to Aquinas (and Frege), a passio enuntiationis, that is a property of propositions, including (true) propositions about negations and non-being, such as ‘non-being is non-being’. Being as true is expressed in terms of ‘it is the case that p’ or ‘it is true that p’, where p can be any (true) proposition. Being as true is made most clearly evident in the affirmative answer to a question, when we say ‘(sic) est’, where ‘est’ refers to the whole proposition put in question, and intends to express the existence of a relation between the content of the proposition and reality, which is in fact the truth.