=1.= =The problem of abnormality—crime, vagabondage, prostitution, alcoholism, etc.= How far is abnormality the unavoidable manifestation of inborn tendencies of the individual, and how far is it a matter of deficient social organization,—the failure of institutional influences? There is a quantitative difference of efficiency between individuals, but if there is hardly a human attitude which if properly controlled and directed could not be used in a socially useful and productive way, must there remain a permanent qualitative difference between socially normal and anti-social actions? =2.= =The problem of individualization.= How far is individualism compatible with social cohesion? What forms of individualism may be considered socially useful or socially harmful? What forms of individualism may be useful in an organization based on a conscious coöperation in view of a common aim? =3.= =The problem of nationalities and cultures.= What new schemes of attitudes and values, or what substitute for the isolated national state as an instrument of cultural expansion, will stop the fight of nationalities and cultures? =4.= =The problem of the sexes.= In the relation between the sexes how can a maximum of reciprocal response be secured with a minimum of interference with personal interests? How is the general social efficiency of a group affected by the various systems of relations between man and woman? What forms of coöperation between the family and society are most favorable to the normal development of children? =5.= =The economic problem.= How shall we be able to develop attitudes which will subordinate economic success to other values? How shall we restore stimulation to labor? The bad family life constantly evident in these pages and the consequent delinquency of children, as well as crime, prostitution and alcoholism, are largely due to the overdetermination of economic interests—to the tendency to produce or acquire the largest possible amount of economic values—because these interests are actually so universal and predominant and because economic success is a value convertible into new experience, recognition, response, and security. The modern division and organization of labor brings a continually growing quantitative prevalence of occupations which are almost completely devoid of stimulation and therefore present little interest for the workman. This fact affects human behavior and happiness profoundly, and the restoration of stimulation to labor is among the most important problems confronting society. The present industrial organization tends also to develop a type of human being as abnormal in its way as the opposite type of individual who gets the full amount of occupational stimulation by taking a line of interest destructive of social order,—the criminal or vagabond.