In my own life, comparatively short and therefore lacking in experience though it be, I have known both personally and vicariously so much anguish that might have been prevented by knowledge. This impels me not to wait till my experience and researches are complete, and my life and vital interest are fading, but to hand on at once those gleanings of wisdom I have already accumulated which may help the race to understand itself. Hence I conclude this little book, for, though incomplete, it contains some of the vital things youth should be told.

In all life activities, house-building, hunting or any other, where intellectual and oral tradition comes in, as it does with the human race, "instinct" tends to die out. Thus the human mother is far less able to manage her baby without instruction than is a cat her kittens; although the human mother at her best has, in comparison with the cat, an infinitude of duties toward, and influences over, her child.

A similar truth holds in relation to marriage. The century-long following of various "civilised" customs has not only deprived our young people of most of the instinctive knowledge they might have possessed, but has given rise to innumerable false and polluting customs.

Though many write on the art of managing children, few have anything to say about the art of marriage, save those who have some dogma, often theological or subversive of natural law, to proclaim.

Any fundamental truth regarding marriage is rendered immeasurably difficult to ascertain because of the immense ranges of variety in human beings, even of the same race, many of which result from the artificial conditions and the unnatural stimuli so prevalent in what we call civilisation. To attempt anything like a serious study of marriage in all its varieties would be a monumental work. Those who have even partially undertaken it have tended to become entangled in a maze of abnormalities, so that the needs of the normal, healthy, romantic person have been overlooked.

Each pair, therefore, has tended to repeat the blunders from which it might have been saved, and to stumble blindly in a maze of difficulties which are not the essential heritage of humanity, but are due to the unreasoning folly of our present customs.

I have written this book for those who enter marriage normally and healthily, and with optimism and hope.

If they learn its lessons they may be saved from some of the pitfalls in which thousands have wrecked their happiness, but they must not think that they will thereby easily attain the perfection of marriage. There are myriad subtleties in the adjustment of any two individuals.

Each pair must, using the tenderest and most delicate touches, sound and test each other, learning their way about the intricacies of each other's hearts.