In the following essay, it’ll be search to expose, through an historical problematization, the radical philosophical novelty that Freudian theory represents regarding the constitution of the moral self-consciousness based on the introjection of the paternal law. For this purpose, in the first place, it will be shown the historically relevant milestones that enable to install a reflection about the moral interiority in the Augustinian philosophy, contrasting it with the classical Hellenic thought. Then, it’ll exposed the Nietzschean hypothesis for the appearance of morality as a power strategy inside the Judeo-Christian tradition for, on one side, show their insufficiencies and, in the other, move on to the Freudian theory about the formation of moral consciousness as a identificatory process in regard to the father figure, what enable to explain the moral self-critique phenomena as a type of self-distancing regarding to himself.