There are some difficulties connected with this theory. This self-control is not possessed by the mass of mankind. Where one companion tries to force this view the other may be driven to marital infidelity, or family discord which may lead to the divorce court. (2) Some consider marital congress to be an act of love. Where this is confined to once, twice or thrice a month and to a few days midway between the menses, except when a child is desired, no wrong will be done; the sacred fire of love will be kept aglow in their hearts, health will reign in their lives, the initial of each child can be intelligently planned for, his prenatal rights be respected, his nativity be warmly welcomed and he be given the best possible environment. (3) The other theory is that of physical necessity, especially for man. Among the unmarried this theory leads to prostitution or the secret sin. Among the married it means legal prostitution, leads to marital excess, poor health of parents, loss of vitality, puny, scrawny, short-lived children and to “race suicide.” =Should coition take place during pregnancy?=--Among the lower animals sexual indulgence never occurs during pregnancy. We are told that the savage races observe this law. Doctors differ on this subject. All agree that it should seldom occur. There is a growing conviction among some of the most eminent physicians that man should observe the law that nature demands of the lower animals and that savage man respects. =What injurious effects may follow sexual intercourse during pregnancy?=--It robs the mother and child of the vitality that both of them need. Sometimes it causes miscarriage. If the initial of a child’s life takes place as a result of uncontrolled sexual desire and its prenatal rights are not respected, it will inherit sensual tendencies. The fact that it is recorded in the Gospels, with great clearness and emphasis, that “Joseph knew not Mary until after Jesus was born,” has a redemptive significance for the human family of which but few theologians have ever caught a glimpse. =What is the difference between impotence and sterility in man?=--The first is an inability to perform the act of coition. A sterile man may be able to perform the act of coition, but his semen contains no sperm cells, or at least, no healthy sperm cells. The first could become a father, if he could perform the act of coition; the second can perform the act, but cannot become a father. =What are the causes of impotency?=--The inability to consummate marriage is very rare. Venereal disease is the chief cause of impotency. Malformation of parts from birth or accident, self-abuse, obesity and the use of opium are other causes. In many cases impotency can be cured. Where a man knows himself to be impotent he should not marry. Wives have a contempt and a most perfect aversion for impotent husbands.