In the construction of socialism and the passage to communism is realized, finally, that universal reconciliation which was the dream of bourgeois thought in the idealistic dialectic of the forms of exploitation and which the proletariat places on its true ground by means of the organization of social labor, where every class structure and every pretext of exclusivity is suppressed. As the realization of the human from of humanity, Marxism achieves the ideal aspiration of the past. But this itself is not asserted in terms of an idea : it is the actual movement of the social totality where the traditional formations are absorbed in the proletariat by the materiality of their real life.