_The duties of marriage_, as a topic, embrace a vast field of thought; and there is _so much_ to say thereon, so much advice to tender, so many absolute commands to enjoin, so many warnings to utter, that it is with difficulty I restrain myself from launching out diffusely in an attempt to give the most important of these. But to so specifically particularize is not the purpose of this book. Enough is said herein, I trust, to set the reflective mind to thinking seriously on these matters and thereby to awaken the conscience to a full sense of its duties. Quite too many cases have come under my observation where the marriage vow has never been consummated or, if consummated at all, in a very begrudging manner, owing to the insubordination of the wife. Consequently dissatisfaction, unhappiness and frequently a permanent separation follows, bringing disgrace upon the family and scandal to their circle of friends. This is not only wrong, but it is a most unpardonable vice. Sexuality has been ordained by God in his wisdom as the means of creation. It exists throughout all nature, in every tree, plant and shrub, in every animal and insect; in every bird that flies, in every fish that swims, in every man and woman. The very best and purest of husbands and wives, all the world over, indulge in sexuality to their united satisfaction, in full acknowledgment that it is of God and from God. Every wife who is unreasonable or derelict in this _duty_ is untrue to her husband and commits a sin against the God of Heaven and earth. Since, then, sexuality is so evidently of Divine appointment, it should be committed entirely to him in its effects.[I] [I] See "In Health." By Dr. A. J. Ingersoll, Corning, N. Y. If at any time the act prove fruitful and a child be born, it should be considered as a great blessing and gift from God Himself. What is more beautiful than to see a married couple engaged in rearing a new human being destined to become an angel in Heaven! For this indeed is the prime object of sexuality and of the marriage covenant. As has been well said, life on earth is Heaven's seminary. And yet, so many wives, to their shame be it said, use preventives to conception, thus attempting to controvert the order of Nature and Nature's God; this is one of the greatest crimes of the present age and vengeance will surely be taken on every transgressor in this sacred matter. Such practice is secret vice which little by little wears upon the inmost vital principle until the perpetrators of such wrongs suffer untold misery in their physical nature--often not even suspecting the cause of such sufferings.