And now, a new world, a new heaven and a new earth. Now new relationships are formed, the old ones retire from their prominence. Now mother and father inevitably give way before masters and mistresses, brothers and sisters yield to friends. This is the period of _Schwaermerei_, of young adoration and of real initial friendships. A child before puberty has playmates. After puberty he has friends and enemies. A whole new field of passional relationship. And the old bonds relaxing, the old love retreating. The father and mother bonds now relax, though they never break. The family love wanes, though it never dies. It is the hour of the stranger. Let the stranger now enter the soul. And it is the first hour of true individuality, the first hour of genuine, responsible solitariness. A child knows the abyss of forlornness. But an adolescent alone knows the strange pain of growing into his own isolation of individuality. All this change is an agony and a bliss. It is a cataclysm and a new world. It is our most serious hour, perhaps. And yet we cannot be responsible for it. Now sex comes into active being. Until puberty, sex is submerged, nascent, incipient only. After puberty, it is a tremendous factor. What is sex, really? We can never say, satisfactorily. But we know so much: we know that it is a dynamic polarity between human beings, and a circuit of force _always_ flowing. The psychoanalyst is right so far. There can be no vivid relation between two adult individuals which does not consist in a dynamic polarized flow of vitalistic force or magnetism or electricity, call it what you will, between these two people. Yet is this dynamic flow inevitably sexual in nature? This is the moot point for psychoanalysis. But let us look at sex, in its obvious manifestation. The _sexual_ relation between man and woman consummates in the act of coition. Now what is the act of coition? We know its functional purpose of procreation. But, after all our experience and all our poetry and novels we know that the procreative purpose of sex is, to the individual man and woman, just a side-show. To the individual, the act of coition is a great psychic experience, a vital experience of tremendous importance. On this vital individual experience the life and very being of the individual largely depends.