We have been told over and over again that the instincts of childhood are all for activity, and a few of us have trained ourselves not to expect the children to _be still_ all the time. Of course, there are times when we simply must have them be still, and, of course, we allow the teachers to insist upon the children being still in school. But we recognize that they must play and romp and run and shout, and we are willing even to spend public funds for playgrounds. This shows that we can learn, and that we can make use of our knowledge. It is necessary only that we extend our knowledge of the instincts of our children just as fast as we can make use of more. Up to the age of about ten, boys are apparently satisfied to play games by themselves, or to play with others in ways that let each look out pretty much for himself. At this age, however, a change begins to appear. Now the boy tends to associate himself with others of the same age, and before you know it your son "belongs" to some "gang." Every street in a town and every corner in a city has its gang. And if your boy has red blood and hard grit in him, he is a member of one of these gangs. He can't help it. He does not join because it is the fashion, or because he is afraid to keep out, or because he has social ambitions. He joins because it is his instinct to join with others in carrying on the activities to which other instincts drive him. If you stand in the way of the gang, you are fighting against one of the strongest forces in human nature. Now if you feel the way Mrs. Brown and Mrs. Green felt about the gangs, I do not blame you. But you must not stop there. Let's try to find out first what the gang means to the boys and what it means to the race. When a boy joins a gang, he does not discard his instinct for play or for running and shouting. He simply takes on a new relation to the world about him. As a member of the gang, he still runs and plays and shouts; but now he has become conscious of his place in the world, and that place is with his fellow-members, surrounded by all sorts of enemies and dangers and obstacles to his well-being. In his gang he finds comfort and support for his struggle with the outside world. Here he finds opportunity for satisfying exchange of thought; here he finds sympathy and understanding such as he can get nowhere else.