_Propagandist by temperament, he devoted himself at an early age to the study of Christian origins. In 1905, at the Sorbonne, he wrote a thesis upon the ~De unitate~ of St. Cyprian. His first published writings dealt with the modernist movement of Loisy, Murri, and Tyrrell, and they attracted considerable attention in Italy and in Germany. The ardour which inspired them was very different from the ~rabies theologica~. The young author, though Calvinist by conviction, adopted an attitude remote from partisanship, his view being, “Whatever is Christian, is ours.” He insisted upon the need for a new synthesis, embracing at once the ancient faith and the actual conditions and the social life and thought of our day. He contended that the non-Roman churches scattered throughout the world might well constitute the embryo of a new Catholicism. But above all, in this writer simultaneously republican and Christian believer, was manifest the earnest desire to reconcile the France of ’89 with the Christian ideal and the longing to witness and to assist in the renovation of his country. Writing of him at this period, M. Emile Faguet, a noted French critic, declared: “His ardour, his fire, his impetus, the rush of his blood, are all instinct with the passion of patriotism.”_ _In the year 1913 this admixture of religious uneasiness and nationalist hope found expression in a volume entitled ~Aux écoutes de la France qui vient~, which from the first attracted widespread attention. Above all, this work embodies faith in France, and the leaders among the younger men of the country rallied round him who had ventured to proclaim this faith. M. Jean Finot, editor of the ~Revue des Revues~, bestowed upon Gaston Riou the title of ~princeps juventutis~. Since then, with the coming of the war, all France has regarded the ~Ecoutes~ as a work of prophecy. We read in it the phrase: “Silently and studiously an élite is in process of formation. The members of this élite are united, as it were, in heroic friendship, for they are all animated by a single passion, the desire to renovate their country, and they are all inspired by the same faith, simple and strong. When others despaired, they did not despair. They are confident that a splendid morrow, worthy of the finest epochs of our history, is now germinating in the furrows of our motherland.”_ _Nor was it in France alone that ~Aux écoutes de la France qui vient~ attracted attention. In Germany, Karl Lamprecht, the great pangermanist historian, devoted two lectures to it at the royal court of Dresden. In ~Zukunft~ Maximilian Harden exclaimed: “The publication of such a work suffices to prove that je-m’enfichisme [the Gallio spirit] is dead in France, and that young France is turning away from the scepticism of the masters of French literature.”_