In closing the last lecture of this series, let me state my confession of faith in sex-education: It is certainly only _one of several_ possible lines of attack on the alarming sex problems of our time; but it offers the most hopeful outlook towards improved sexual morals and health, both physical and psychical. However, we shall gain nothing of permanent value by extravagant claims or hopes as to the ultimate effect of sex-education. We must expect incomplete results. It will not entirely solve the sex problems for all individuals who receive instruction; but it will solve all of the problems of many individuals and help many others. It will not eradicate the social evil and its characteristic diseases, but it will protect many young people and so reduce the sum total of awful consequences. It will not prevent all divorces and matrimonial disharmonies, but already the biological teaching is helping and some day the social-ethical problems will be understood and then most intelligent men and women will understand the fundamental principles for permanent and harmonious monogamic marriage. Finally, sex-education will not enforce universal sexual morality in conformity with our accepted code, but it will help many individuals through decisive battles with sex-instincts. [Sidenote: Sex-Education and general education.] Such are some of the lines along which extreme claims and hopes for sex-education have been and are still being made. There is some truth in each; in fact, there is more than enough to justify the present movement for sex-education. To all those who see nothing in the movement because it will not solve all the sex problems which have created a demand for special instruction, we may reply by simply pointing to the fact that general education makes some better and more efficient citizens, but many times it fails to give desirable results. We believe in general education because it aims to offer all individuals help in preparation for more efficient life, although it succeeds only in part. Likewise, we should stand for the instruction of all young people in matters concerning sex because it is certain that such knowledge will function completely in many lives and will work appreciable good in many others. [Sidenote: A permanent and essential part of education.]