It has been estimated that only about five per cent. of all marriages are successful. Is this true, and if true, why? If five per cent. made a success of marriage, why could not the other ninety-five? Marriage is a science to be studied by the prospective bride and groom in order that they may be ranked with the five per cent. and not make a failure of their married life. Few would enter the marriage relation if convinced that it would be a failure. The prospective bride looks around among her acquaintances and sees the lack of true happiness, thinks that her case will be an exception, that her marriage will turn out all right and then goes blindly ahead into the new life without any preparation. A large percentage of the unhappiness among married couples comes through a misunderstanding of the marital relations. A great deal of this is due to ignorance on the part of the bride and thoughtlessness on the part of the husband. This is partly due to defective education during childhood in regard to the sexes. The training of boys and girls in this matter is very different. Knowledge pertaining to the sexual life is talked over very freely among boys, so that by the time the boy is of a marriageable age he is pretty well posted. With girls it is quite different. It would be considered very immodest for a girl to discuss such matters. She does not feel free even to talk with her mother or other adviser, and so she goes to the altar ignorant of many things she should know. Then during the first few days of married life this knowledge so overwhelms her and often gives her such a severe shock that it leaves a lasting impression. She has no way of knowing that her husband is just like other men. She is liable to regard him as a brute and resent his attentions. Such a condition of affairs is altogether wrong, but the girl is not to be blamed. Had she been taught what to expect, much of the unhappiness of married life might have been avoided. If taught correctly, the girl should regard the sexual act as the culmination of true love. It should be regarded as something sacred, something that makes her and her husband as one. Fortunate indeed is the girl whose husband realizes this lack of knowledge and gently leads her to desire the fulfillment of love. Unfortunate is the girl whose husband regards this act only as the gratification of animal passions--something it is a wife's duty to endure as such. Passion or sex sense is a sign of maturity. It is the calling for a mate. All animals have this sense and nearly all animals have a mating season. The billing and cooing of the birds in the springtime is an expression of this sense--the love sense. It is possessed by every little insect. Only by knowing their habits do we see the expression of it. This sense is nothing of which one should be ashamed. It was God-given for a divine purpose.