In many respects, Brentano conducted pioneering analyses of problems that are currently in the focus of cognitive science and artificial intelligence: from the problem of reference to that of representation, from the problem of categorial classification to ontology and the cognitive analysis of natural language.

Brentano, in fact, dealt with and wrote on questions concerning the auditory stream (temporal apprehension), visual perception (continua, point of view, three-dimensional construction of phenomenal objects), intentionality, imagery, and conceptual space, considering these...