The emotions express both, physiologic and cultural realities. They posses the schizophrenic capacity of that in our existence which seem stable, combined with what is transformed and changes every instant. This explains the existence of emotions "of time", or the fact that we talk about centuries "of lights" in opposition to other "dark" or "genocidal" centuries. The resentment has always existed, but only along recent times it has become an instrument of socialization and a motor of political change. The emergence of revolutions along the end of the 18th century as tales of the radically new, and perfect excuse for the elimination of "expired" traditions and elites, gave it a new value that has been on a non-stop rise since then.