Aristotle's influence in the young Heidegger has been confirmed by the publication of his unedited works. This article questions Heidegger's late allegation of having received that influence through reading Brentano's "On the manifold sense of Being in Aristotle". This study analyses the different steps of Heidegger's thesis on truth until Sein und Zeit and compares them to those of Brentano, such as judgment being the proper place of truth and the difference between judgment and representation.

One of the most important critiques of Brentano’s thought has been the one of “psychologism”. Nevertheless, a correct study of some of his thesis cannot prove this conclusion. On the other hand, a comparison to Polo’s notion of life —especially, cognitive life and its relation to the physical realm— allows us to grasp a better understanding of Brentano’s proposal on the psychical aspect of knowledge. This shows that Husserl’s corrections to Brentano’s notion of intentionality, i.e. its idealization, is not valid.