The issue of intentionality was posed anew in philosophy by Franz Brentano. However, it was Brentano himself who indicated that the source of intentionality-related problems dates back to Classical Antiquity and the Middle Ages. The search for the original traces of this issue in the history of philosophy has led me to conclude that intentionality as an inalienable characteristic of consciousness is characterized by three-dimensionality, which is expressed in theoria, praxis and poiesis. Contemporary research focuses primarily on cognitive intentionality, examining in particular either the very subject-object relation or the immanent (intentional) object, in-existing in psychical experience (in the acts of consciousness). And yet, intention...