The crude material of instinct is, in most respects, equally capable of leading to desirable and to undesirable actions. In the past, men did not understand the training of instinct, and therefore were compelled to resort to repression. Punishment and fear were the great incentives to what was called virtue. We now know that repression is a bad method, both because it is never really successful, and because it produces mental disorders. The training of instincts is a totally different method, involving a totally different technique. Habits and skill make, as it were, a channel for instinct, leading it to flow one way or another according to the direction of the channel. By creating the right habits and the right skill, we cause the child’s instincts themselves to prompt desirable actions. There is no sense of strain, because there is no need to resist temptation. There is no thwarting, and the child has a sense of unfettered spontaneity. I do not mean these statements to be taken in an absolute sense; there will always be unforeseen contingencies in which older methods may become necessary. But the more the science of child psychology is perfected, and the more experience we acquire in nursery-schools, the more perfectly the new methods can be applied. I have tried to bring before the reader the wonderful possibilities which are now open to us. Think what it would mean: health, freedom, happiness, kindness, intelligence, all nearly universal. In one generation, if we chose, we could bring the millennium. But none of this can come about without love. The knowledge exists; lack of love prevents it from being applied. Sometimes the lack of love towards children brings me near to despair--for example, when I find almost all our recognized moral leaders unwilling that anything should be done to prevent the birth of children with venereal disease. Nevertheless, there is a gradual liberation of love of children, which surely is one of our natural impulses. Ages of fierceness have overlaid what is naturally kindly in the dispositions of ordinary men and women. It is only lately that many Christians have ceased to teach the damnation of unbaptized infants. Nationalism is another doctrine which dries up the springs of humanity; during the war, we caused almost all German children to suffer from rickets. We must let loose our natural kindliness; if a doctrine demands that we should inflict misery upon children, let us reject it, however dear it may be to us. In almost all cases, the psychological source of cruel doctrines is fear; that is one reason why I have laid so much stress upon the elimination of fear in childhood. Let us root out the fears that lurk in the dark places of our own minds. The possibilities of a happy world that are opened up by modern education make it well worth while to run some personal risk, even if the risk were more real than it is.