And, like the pests that assail growing plants, the sensual pests that war against the soul must be beaten off by vigorous and continuous growth. No other prophylactic is so sure or so effective as this. When I was asked whether the Utopian education was useful or not, I adduced, as an instance of its usefulness, its power of protecting the young from the allurements of a pernicious literature, to which the victims of the conventional type of education, with their lowered vitality and their lack of interest in life, too readily succumb. This is a typical example of the way in which the rising sap of life strengthens the soul to resist the temptations to undue sensual indulgence by which it is always liable to be assailed. The victim of a repressive, growth-arresting type of education, having few if any interests in life, not infrequently takes to the meretricious excitements of sensuality in order to relieve the intolerable monotony of his days. But the training which makes for many-sided growth, by filling the life of the "adolescent" with many and various interests, removes temptations of this particular type from his path. And it does more for him than this. It generates in him a state of health and well-being, in which the very vigour and elasticity of his spiritual fibre automatically shields him from temptation by refusing to allow the germs of moral disease to effect a lodgment in his soul. It would be well if our moralists could realise that the chief causes of weakness in the presence of sensual temptation are, on the one hand, boredom and _ennui_, and on the other hand flabbiness and degeneracy of spiritual fibre, and that the remedy for both these defects is to give the young the type of education which will foster rather than hinder growth.