"Even since Freud, some fifteen years ago, began to publish his observations and conclusions showing that the sexual life of the child not only existed, as had previously been denied, but was of an unexpected richness, interest in the subject has been gradually increasing, and its importance for both pedagogy and psychopathology has become more and more realized. Moll attempts here to give expression to this general interest by devoting to the subject a volume of considerable dimensions. (...) The book as a whole contains many useful and valuable sections, notably those on the legal and educative aspects of the subject, and it may serve to direct attention to an important and neglected field of study." - Ernest Jones, The Journal of Philosophy, Psychology and Scientific Methods, Vol. 10, No. 7, pp. 188-190.