its strength and efficiency, marked by the insolent domination of the common soldier, and luridly illustrated by the statistical facts that from Septimius Severus to Diocletian the average reign of an Emperor was about three years and that there were only two or three sovereigns who were not the victims of a mutiny or a conspiracy. As one of the efficacious causes of this decline has often been suggested (most recently by M. Bouche-Leclercq) the detachment of men's interest from the public weal by the attraction and influence of individualistic oriental religions, which did not aim at securing the stability of the state, like the old religions of Rome and Greece, but undertook to save the individual and ensure his happiness in a life beyond the tomb. It is undoubtedly true that in this period religious currents were stirring society to its depths, and several rival worships were engaged in a competition of which the issue was decided in the following century. And if the state was really weakened by a cleavage which had become sensible between the private spiritual interests of the individual citizen and the public interests of society, if its cohesion was endangered by the tendency to place the former interests above the latter, we can understand the statesmanship of Constantine the Great, who, by closely connecting the state with one of those individualistic religions, conciliated and identified the two interests. I do not suggest that Constantine formulated the problem in the general terms in which we may formulate it now; he was pushed to his far-reaching decision by a
