In illustration of this new determination one immediately thinks of the international effort to rid the face of the earth of tuberculosis, in which Germany, Italy, France, England and America are engaged with such enthusiasm. This movement has its international congresses, its discoverers and veterans, also its decorations and rewards for bravery. Its discipline is severe; it requires self-control, endurance, self-sacrifice and constant watchfulness. Its leaders devote hours to careful teaching and demonstration, they reclaim acres of bad houses, and make over the food supply of huge cities. One could instance the determination to do away with neglected old age, which finds expression in the Old Age Pension Acts of Germany and Australia, in the State Savings Banks of Belgium and France, in the enormous number of Mutual Benefit Societies in England and America. In such undertakings as these, with their spontaneous and universal manifestations, are we beginning to see the first timid forward reach of one of those instinctive movements which carry onward the progressive goodness of the race. It is possible that this substitution of nurture for warfare is analogous to that world-wide effort to put a limit to revenge which one nation after another essayed as each reached a certain stage of development. To compel the avenger to accept blood-money in lieu of the blood of his enemy may have been but a short step in morals, but at least it destroyed the stimulus to further shedding of blood which each avenged death had afforded, and it laid the foundations for court adjudications. The newer humanitarianism is more aggressive and substitutes emotional stimuli as well as codes of conduct. We may predict that each nation quite as a natural process will reach the moment when virile good-will will be substituted for the spirit of warfare. The process of extinguishing war, however, compared to the limiting of revenge, will be amazingly accelerated. Owing to the modern conditions of intercourse, each nation will respond, not to an isolated impulse, but will be caught in the current of a world-wide process.