When the morality of the public schools is being discussed, attention is usually concentrated almost exclusively on that particular branch of morality which is concerned with sex. Nor is this unnatural; for sex plays so important a part in the life of a growing boy, and the development of his character is so closely bound up with the development of his physical nature, that the determining part may be very easily confused with the whole. Yet there are many boys who are sexually virtuous, but filled with the worst type of hardness and intolerance; many, too, who are sexually vicious, yet full of love and sympathy. To imagine that the problem of public school morality is solved as soon as we have discovered the best method of making public school boys continent, is to look at the matter from an altogether too narrow angle; for the sins of the spirit, we have been told, are more unpardonable than the sins of the flesh. Nevertheless, when we have said this, as say it we must, the fact remains that the sex question is one of overwhelming importance. For if once self-indulgence is allowed to become firmly rooted in a boy's character, in the majority of cases it will be ineradicable; and he will either be the victim throughout a great part of his life of temptations which he loathes, and which will be a constant source of unhappiness to him, or he will end by acquiescing in a manner of life which is degrading, it may be to himself alone, it may be both to himself and others. It will be urged, of course, as it has been urged against every school novel which has attempted to give a true picture of the "manners" of a school house, that we are grotesquely exaggerating the whole business; that there may be a problem in the case of this boy or that, but that in general there is no problem at all. This simply will not do. There is a problem, and a very grave one; and we had better anticipate the possibility of being misunderstood by stating very directly what it is. We believe that the number of cases in which boys have undesirable relationships with one another is not very large, but we believe also that there is a very great deal of that purely personal self-indulgence, that purely self-regarding licentiousness, which is the cause of so much unhappiness in boyhood.