The human organism, as we know, is a machine on which excitations from without, streaming through the nerves and brain, effect internal work, and, notably, stimulate the glandular system. In recent years the glandular system, and especially that of the ductless glands, has taken on an altogether new significance. These ductless glands, as we know, liberate into the blood what are termed "hormones," or chemical messengers, which have a complex but precise action in exciting and developing all those physical and psychic activities which make up a full life alike on the general side and the reproductive side, so that their balanced functions are essential to wholesome and complete existence. In a rudimentary form these functions may be traced back to our earliest ancestors who possessed brains. In those times the predominant sense for arousing the internal mental and emotional faculties was that of smell, the other senses being gradually evolved subsequently, and it is significant that the pituitary, one of the chief ductless glands active in ourselves to-day, was developed out of the nervous centre for smell in conjunction with the membrane of the mouth. The energies of the whole organism were set in action through stimuli arising from the outside world by way of the sense of smell. In process of time the mechanism has become immensely elaborated, yet its healthy activity is ultimately dependent on a rich and varied action and reaction with the external world. It is becoming recognised that the tendency to pluri-glandular insufficiency, with its resulting lack of organic harmony and equilibrium, can be counteracted by the physical and psychic stimuli of intimate contacts with the external world. In this action and reaction, moreover, we cannot distinguish between sexual ends and general ends. The activities of the ductless glands and their hormones equally serve both ends in ways that cannot be distinguished. "The individual metabolism," as a distinguished authority in this field has expressed it, "is the reproductive metabolism."[18] Thus the establishment of our complete activities as human beings in the world is aided by, if not indeed ultimately dependent upon, a perpetual and many-sided play with our environment.

[18] W. Blair Bell, The Sex-Complex, 1920, p. 108. This book is a cautious and precise statement of the present state of knowledge on this subject, although some of the author's psychological deductions must be treated with circumspection.

It is thus that we arrive at the importance of the play-function, and thus, also, we realise that while it extends beyond the sexual sphere it yet definitely includes that sphere. There are at least three different ways of understanding the biological function of play. There is the conception of play, on which Groos has elaborately insisted, as education: the cat "plays" with the mouse and is thereby educating itself in the skill necessary to catch mice; all our human games are a training in qualities that are required in life, and that is why in England we continue to attribute to the Duke of Wellington the saying that "the battle of Waterloo was won on the playing fields of Eton." Then there is the conception of play as the utilisation in art of the superfluous energies left unemployed in the practical work of life; this enlarging and harmonising function of play, while in the lower ranges it may be spent trivially, leads in the higher ranges to the production of the most magnificent human achievements. But there is yet a third conception of play, according to which it exerts a direct internal influence—health-giving, developmental, and balancing—on the whole organism of the player himself. This conception is related to the other two, and yet distinct, for it is not primarily a definite education in specific kinds of life-conserving skill, although it may involve the acquisition of such skill, and it is not concerned with the construction of objective works of art, although—by means of contact in human relationship—it attains the wholesome organic effects which may be indirectly achieved by artistic activities. It is in this sense that we are here concerned with what we may perhaps best call the play-function of sex.[19]

[19] The term seems to have been devised by Professor Maurice Parmelee, Personality and Conduct, 1918, pp. 104, 107, 113. But it is understood by Parmelee in a much vaguer and more extended sense than I have used it.

As thus understood, the play-function of sex is at once in an inseparable way both physical and psychic. It stimulates to wholesome activity all the complex and inter-related systems of the organism. At the same time it satisfies the most profound emotional impulses, controlling in harmonious poise the various mental instincts. Along these lines it necessarily tends in the end to go beyond its own sphere and to embrace and introduce into the sphere of sex the other two more objective fields of play, that of play as education, and that of play as artistic creation. It may not be true, as was said of old time, "most of our arts and sciences were invented for love's sake." But it is certainly true that, in proportion as we truly and wisely exercise the play-function of sex, we are at the same time training our personality on the erotic side and acquiring a mastery of the art of love.

The longer I live the more I realise the immense importance for the individual of the development through the play-function of erotic personality, and for human society of the acquirement of the art of love. At the same time I am ever more astonished at the rarity of erotic personality and the ignorance of the art of love even among those men and women, experienced in the exercise of procreation, in whom we might most confidently expect to find such development and such art. At times one feels hopeless at the thought that civilisation in this supremely intimate field of life has yet achieved so little. For until it is generally possible to acquire erotic personality and to master the art of loving, the development of the individual man or woman is marred, the acquirement of human happiness and harmony remains impossible.

In entering this field, indeed, we not only have to gain true knowledge but to cast off false knowledge, and, above all, to purify our hearts from superstitions which have no connection with any kind of existing knowledge. We have to cease to regard as admirable the man who regards the accomplishment of the procreative act, with the pleasurable relief it affords to himself, as the whole code of love. We have to treat with contempt the woman who abjectly accepts the act, and her own passivity therein, as the whole duty of love. We have to understand that the art of love has nothing to do with vice, and the acquirement of erotic personality nothing to do with sensuality. But we have also to realise that the art of love is far from being the attainment of a refined and luxurious self-indulgence, and the acquirement of erotic personality of little worth unless it fortifies and enlarges the whole personality in all its aspects. Now all this is difficult, and for some people even painful; to root up is a more serious matter than to sow; it cannot all be done in a day.

It is not easy to form a clear picture of the erotic life of the average man in our society. To the best informed among us knowledge in this field only comes slowly. Even when we have decided what may or may not be termed "average" the sources of approach to this intimate sphere remain few and misleading; at the best the women a man loves remain far more illuminating sources of information than the man himself. The more one knows about him, however, the more one is convinced that, quite independently of the place we may feel inclined to afford to him in the scale of virtue, his conception of erotic personality, his ideas on the art of love, if they have any existence at all, are of a humble character. As to the notion of play in the sphere of sex, even if he makes blundering attempts to practice it, that is for him something quite low down, something to be ashamed of, and he would not dream of associating it with anything he has been taught to regard as belonging to the spiritual sphere. The conception of "divine play" is meaningless to him. His fundamental ideas, his cherished ideals, in the erotic sphere, seem to be reducible to two: (1) He wishes to prove that he is "a man," and he experiences what seems to him the pride of virility in the successful attainment of that proof; (2) he finds in the same act the most satisfactory method of removing sexual tension and in the ensuing relief one of the chief pleasures of life. It cannot be said that either of these ideals is absolutely unsound; each is part of the truth; it is only as a complete statement of the truth that they become pathetically inadequate. It is to be noted that both of them are based solely on the physical act of sexual conjunction, and that they are both exclusively self-regarding. So that they are, after all, although the nearest approach to the erotic sphere he may be able to find, yet still not really erotic. For love is not primarily self-regarding. It is the intimate, harmonious, combined play—the play in the wide as well as in the more narrow sense we are here concerned with—of two personalities. It would not be love if it were primarily self-regarding, and the act of intercourse, however essential to secure the propagation of the race, is only an incident, and not an essential in love.

Let us turn to the average woman. Here the picture must usually be still more unsatisfactory. The man at least, crude as we may find his two fundamental notions to be, has at all events attained mental pride and physical satisfaction. The woman often attains neither, and since the man, by instinct or tradition, has maintained a self-regarding attitude, that is not surprising. The husband—by primitive instinct partly, certainly by ancient tradition—regards himself as the active partner in matters of love and his own pleasure as legitimately the prime motive for activity. His wife consequently falls into the complementary position, and regards herself as the passive partner and her pleasure as negligible, if not indeed as a thing to be rather ashamed of, should she by chance experience it. So that, while the husband is content with a mere simulacrum and pretence of the erotic life, the wife has often had none at all.

Few people realise—few indeed have the knowledge or the opportunity to realise—how much women thus lose, alike in the means to fulfill their own lives and in the power to help others. A woman has a husband, she has marital relationships, she has children, she has all the usual domestic troubles—it seems to the casual observer that she has everything that constitutes a fully developed matron fit to play her proper part in the home and in the world. Yet with all these experiences, which undoubtedly are an important part of life, she may yet remain on the emotional side—and, as a matter of fact, frequently remains—quite virginal, as immature as a school-girl. She has not acquired an erotic personality, she has not mastered the art of love, with the result that her whole nature remains ill-developed and unharmonised, and that she is incapable of bringing her personality—having indeed no achieved personality to bring—to bear effectively on the problems of society and the world around her.