This pamphlet advises parents when and how to answer the child's questions about sexual matters. It discusses which attitudes to take towards masturbation and mutual sex play and gives advice concerning instructions about birth control and venereal diseases. Psychoanalysts will find themselves in general agreement with the principles expressed although here and there a slight difference in opinion about some details may occur. The presentation will be sufficient for some parents; many others would benefit by an opportunity to discuss further the problems raised.