Abstract

Being as truth has a greater extension and universality than being as an act of being in Aquinas’s metaphysics, because it also includes privations and negations. In order to better understand this aspect, it is necessary to examine the role played by logic and, in particular, by the syncategoremata “est” and “non” in the definition of being as truth. This analysis leads to the discovery that being as truth is expressed in terms of an est as a passio enuntiationis and corresponds to the affirmatio or actus compositionis of which contemporary treatises on logic spoke. Can such a passio enuntiationis be a passio entis? In Aquinas’s works there are arguments for and against.