The social relationships in a modern city are so hastily made and often so superficial, that the old human restraints of public opinion, long sustained in smaller communities, have also broken down. Thousands of young men and women in every great city have received none of the lessons in self-control which even savage tribes imparted to their children when they taught them to master their appetites as well as their emotions. These young people are perhaps further from all community restraint and genuine social control than the youth of the community have ever been in the long history of civilization. Certainly only the modern city has offered at one and the same time every possible stimulation for the lower nature and every opportunity for secret vice. Educators apparently forget that this unrestrained stimulation of young people, so characteristic of our cities, although developing very rapidly, is of recent origin, and that we have not yet seen the outcome. The present education of the average young man has given him only the most unreal protection against the temptations of the city. Schoolboys are subjected to many lures from without just at the moment when they are filled with an inner tumult which utterly bewilders them and concerning which no one has instructed them save in terms of empty precept and unintelligible warning. We are authoritatively told that the physical difficulties are enormously increased by uncontrolled or perverted imaginations, and all sound advice to young men in regard to this subject emphasizes a clean mind, exhorts an imagination kept free from sensuality and insists upon days filled with wholesome athletic interests. We allow this regime to be exactly reversed for thousands of young people living in the most crowded and most unwholesome parts of the city. Not only does the stage in its advertisements exhibit all the allurements of sex to such an extent that a play without a "love interest" is considered foredoomed to failure, but the novels which form the sole reading of thousands of young men and girls deal only with the course of true or simulated love, resulting in a rose-colored marriage, or in variegated misfortunes.