The we is a concept that is difficult to define due to the variety of its declinations, and a unitary meaning is not possible. The psychological we is multidetermined, multiple and mobile. Despite having introduced a reflection on the relationship between the psychology of the individual and social psychology, Freudian psychoanalysis for its negative anthropological conception and for its idea of a foundation of the social based on parricidal violence does not provide a cooperative and prosocial model for a we-identity. Along the infantile evolutionary axis it is instead possible to follow the various steps of the intersubjective organization of the child up to the construction of a mental representation of a joint-we in which it is possible to glimpse a first formative stage of a basic psychological sense of us, which will be subject to various reorganizations and declinations in the course of adult social life.