The commentary presents an epistemological reflection about Dialogical Self theory. First, the theoretical issues of DS about the relationship between individuality, alterity and society are discussed, elaborating on the articles of this special issue. Then, it is presented the argument of psychologist's ontological fallacy, that is the attitude to moving from the study of processes to the study of psychological entities. Finally a development toward new research directions is proposed, focusing on the study of higher psychological functions and processes, taking into account complex symbolic products of human activity and developing psychological imagination.