This is how introversion begins. The lower sexual centers are aroused. They find no sympathy, no connection, no response from outside, no expression. They are dynamically polarized by the upper centers within the individual. That is, the whole of the sexual or deeper sensual flow goes on upwards in the individual, to his own upper, from his own lower centers. The upper centers hold the lower in positive polarity. The flow goes on upwards. There _must_ be some reaction. And so you get, first and foremost, self-consciousness, an intense consciousness in the upper self of the lower self. This is the first disaster. Then you get the upper body exploiting the lower body. You get the hands exploiting the sensual body, in feeling, fingering, and in masturbation. You get a pornographic longing with regard to the self. You get the obscene post cards which most youths possess. You get the absolute lust for dirty stories, which so many men have. And you get various mild sex perversions, such as masturbation, and so on. What does all this mean? It means that the activity of the lower psyche and lower body is polarized by the upper body. Eyes and ears want to gather sexual activity and knowledge. The mind becomes full of sex: and always, in an introvert, of his _own_ sex. If we examine the apparent extroverts, like the flaunting Italian, we shall see the same thing. It is his own sex which obsesses him. And to-day what have we but this? Almost inevitably we find in a child now an intense, precocious, secret sexual preoccupation. The upper self is rabidly engaged in exploiting the lower self. A child and its own roused, inflamed sex, its own shame and masturbation, its own cruel, secret sexual excitement and sex _curiosity_, this is the greatest tragedy of our day. The child does not so much want to _act_ as to _know_. The thought of actual sex connection is usually repulsive. There is an aversion from the normal coition act. But the craving to feel, to see, to taste, to _know_, mentally in the head, this is insatiable. Anything, so that the sensation and experience shall come through the _upper_ channels. This is the secret of our introversion and our perversion to-day. Anything rather than spontaneous direct action from the sensual self. Anything rather than the merely normal passion. Introduce any trick, any idea, any mental element you can into sex, but make it an affair of the upper consciousness, the mind and eyes and mouth and fingers. This is our vice, our dirt, our disease. And the adult, and the ideal are to blame. But the tragedy of our children, in their inflamed, solitary sexual excitement, distresses us beyond any blame.