In this little book Dr. Marie Stopes deals with subjects which are generally regarded as too sacred for an entirely frank treatment. Some earnest and delicate minds may feel apprehensive that such frankness in details is "dangerous," because the effect on prurient minds might be to give them food for their morbid fancies. It is just such a fear which has been largely responsible for the silence and mystery which have for so long been wrapped round the sacred rites of mating. The question now is, Has this reticence been carried too far? Has it been carried so far that it now tends to defeat its purpose of safeguarding public morals? There are many who unhesitatingly answer such questions in the affirmative. Their intimate knowledge of human lives compels them to recognise that at least as much harm is done by silence as by speaking out. Everything depends on how the matter is presented.