As an anthropological experience of the transitory things, memory depends on the concrete significations of the transfer from a generation to the other generation. Prof. Violeta Barbu wishes to stress the discrepancies which exist between the catholic perspective and the secularist one concerning the memory of totalitarianism of XX century, with its two faces, fascism and communism. In the first part of the article, the author mentions and analyses the classical approaches of the political philosophy of some notorious authors, e.g. Hannah Arendt, Thomas Mann, Walderman Gurian and so on. In the first part also there is broached the history of the conceptions about the two types of totalitarianism beginning with the time of the Cold War till today. In the second part, the author affirms that the model of the political philosophy of a unique totalitarianism with two faces relied on the historic differences has to be re-dimensioned according with the European cultural model of diversity, known as a defining factor of the identity of the reunited Europe. This cultural model was underlined by the Magisterium of the Catholic Church through the encyclical letters of the Pope John Paul II. Also there are highlighted some historical contributions of the Pope.