+The realization of the good of all in and through the act of each is the social ideal.+--In everyday matters this can be brought about by simply taking account of all the interests of others which will be affected by our act. In the relations between employer and employee, for instance, profit sharing is the most practical form of realizing this community of interest. Such action involves a co-operation of interests as the motives of the individual act. The larger social ends, such as education, philanthropy, reform, public improvements, require the co-operation of many individuals in the same enterprise. The readiness to contribute a fair share of our time, money, and influence to these larger public interests, which no individual can undertake alone, is an important part of our social duty. Every beneficent cause, every effort to rouse public sentiment against a wrong, or to make it effective in the enforcement of a right; every endeavor to unite men in social intercourse; every plan to extend the opportunities for education; every measure for the relief of the deserving poor, and the protection of homeless children; every wise movement for the prevention of vice, crime, and intemperance, is entitled to receive from each one of us the same intelligent attention, the same keenness of interest, the same energy of devotion, the same sacrifice of inclination and convenience, the same resoluteness and courage of action that we give to our private affairs. +Co-operation, then, is of two kinds, inward and outward: co-operation between the interests of others and of ourselves in the motive to our individual action; and co-operation of our action with the action of others to accomplish objects too vast for private undertaking.+--Both forms of co-operation are in principle the same; they strengthen and support each other. The man who is in the habit of considering the interests of others in his individual acts will be more ready to unite with others in the promotion of public beneficence. And on the other hand the man who is accustomed to act with others in large public movements will be more inclined to act for others in his personal affairs. The reformer and philanthropist is simply the man of private generosity and good-will acting out his nature on a larger stage. THE VIRTUE. +Public spirit is the life of the community in the heart of the individual.+--This recognition that we belong to society, and that society belongs to us, that its interests are our interests, that its wrongs are ours to redress, its rights are ours to maintain, its losses are ours to bear, its blessings are ours to enjoy, is public spirit.