This book is one of the most valuable ever written because it treats fully and wisely this question of personal and social purity; it points out the reefs, the bars, the snags, the icebergs, the shallow and dangerous places where human wrecks are made; it guides those who accept it as their pilot into the deep waters of an unobstructed channel where the voyage of life will be ever safe, successful, glorious. Here will be found an incentive to climb rather than to coast, an inspiration to struggle even against the current if in the struggle may be won some of the more valuable prizes of life. Here is a book that holds high the single standard of morality, and demands that men shall be as pure as women; it stands boldly for the education of the young in sex hygiene, and proclaims a truth that ought long ago to have been universally known, that it is the right of every person to know every knowable fact pertaining to themselves, and that such knowledge ought to be imparted to them before the lack of it has brought injury to their lives. This is a book that will help to forever banish that false modesty and prurient thinking which has made the tremendous growth of public vice a reality, until every girl is in danger of enslavement and every boy threatened with its corruption. This is not a pioneer book on these questions. Other most excellent works have preceded it, for which we should all be grateful, and have paved the way for this latest volume. The excellence of this work consists largely in its completeness. It is a book for the home, for every home, and for every member of the home. It tells exactly what ought to be known concerning the sex nature and life of the individual, and the normal relations of the family and society, and best of all it teaches parents how to impart this saving knowledge to their children. Any and every home that takes this book as a friend and counselor, and faithfully studies its pages, will fortify every person within the portals of that home against the baneful influences of impurity and vice.