But true love is only possible if the natural development has not been disturbed nor the natural course interrupted, and the young people have been given the opportunity to develop their ideals. If the development is arrested, if the growth of the erotic instinct is disturbed, at the time of restlessness and nerve-irritability, then the image of the ideal in the mind is confused and the discovery of its organic counterpart is impossible. Now, the whole nervous system is under great tension during the formation period. Inquietude, vague unrest and dissatisfaction disturbs the boy’s equanimity. His heart is tremulous with emotion and represents a volcano of agitation in perpetual eruption. He exudes intense feeling and passion. The mind of the girl is confused with vague dissatisfaction and vaguer desires which she vainly endeavors to define even to herself. Her heart is wildly stirred and issues from its chrysalis to renewed dreams of chimerical bliss. Joy and sorrow, exultation and depression alternate like dawn and dusk. All the complex subtleties of the feminine heart give rein to a single emotion. She lives in the realm of romance, her soul keeps soaring in the land of glamor. Hence the least disturbance will be fatal to the development of a clear and distinct image of the ideal. Such disturbances are ever present in our advanced civilization. The early intimate association with the other sex, among the poorer classes, gives palpable suggestions of the libido connected with the functions of reproduction, at a time when mystery ought to shroud its object. Animal passion, especially in great cities, obtrudes itself upon the attention of young children, and they become conscious of the greatest of all human needs through the desire of the flesh, and not by a gradual growing sympathy for a noble being, possessing lasting gifts of sentiment and thought. The sentiments are, therefore, not of true love but of lust; and to transform lust into love is a difficult task.