The teaching of loyalty to any cause appears to be a lesson in patriotism. So far as teaching of patriotism is centered directly upon the production of loyalty to the whole group which constitutes the nation, the first object must be to create a sense of reality of the group in the mind of the individual. We may expect to do this in part by the teaching of geography and history in an adequate way, but we must also instill such patriotism by inducing individuals to participate in nation-wide organizations, which are capable of realizing dramatic effects. The experiences of the war have taught us to see this. It is organization or cooeperation for practical ends, under conditions in which deep feeling is aroused, that most quickly and effectually creates the sense of solidarity in great groups of individuals. We must study the psychological side of this matter, and see how the power and momentum that are so readily gained in time of need can be better controlled for all the routine purposes of education and the practical daily life. The organization of national activities by means of voluntary associations will be likely to be one of the main educational methods of the future. If we are far-seeing we shall try to utilize the powers of organization, cooeperation and communication to overcome many antagonisms now existing in society. War temporarily suspends class distinctions and many other forms of social dualism. The reaction after the war may be in the direction of increasing all the former antagonisms. To attain a strong morale and unity in times less dramatic than those of war is an educational problem, in a wide sense, but it is also a problem of the practical organization of all the social life.