Aldo Moro was, with few equals, one of the most influential statesmen of the First Republic: an illustrious Constituent Assembly member, five-time Prime Minister, and a central figure in the Christian Democrats, of which he became secretary and national president. However, to fully understand the moral stature of this historic figure, it is not possible to reduce him to a simple successful politician; we must go beyond state affairs to discover his intellectual and, above all, spiritual dimension, the true and primary objective of this study. His spirit of action, as a politician and man of faith, can be defined as "Christian Realism," which stemmed above all from the duty to accept history in the complexity and mobility of its factors and the imperativeness of its demands. During the war years and the immediate postwar period, Moro's contribution to the construction of the democratic state was primarily that of a scholar and animator of intellectual groups, through shaping the consciences of his slightly younger contemporaries in the FUCI and ACI, for whom he quickly assumed the role of a young mentor. The writings that appeared in the press of Catholic intellectuals, such as Azione Fucina and La Rassegna, and especially in the magazine Studium, between 1943 and 1946, are characterized by this strong and lively desire to be present in social life: political engagement is seen as a natural testing ground for a mature Christian spirituality, capable of neither shying away from nor fearing the challenge of history. Moro, along with others, was the one who carried out a sustained campaign of conviction and persuasion in favor of Christianity's reconciliation with democracy: in his early writings and speeches, the influence of Christian philosophers from St. Thomas Aquinas to Maritain clearly emerges.