10. LAW OF GOD.--So graciously has the law of God been arranged in regard to the mother's strength, that, if it be obeyed, there will be, as a rule, an interval of at least from eighteen months to two years between the birth of one child and that of another. Every married man should abstain during certain natural seasons. In this periodical recurrance God has instituted to every husband the law of restraint, and insisted upon self-control. 11. TO YOUNG PEOPLE WHO ARE MARRIED.--Be exceedingly careful of license and excess in your intercourse with one another. Do not needlessly expose, by undress, the body. Let not the purity of love degenerate into unholy lust! See to it that you walk according to the divine Word. "Dwelling together as being heirs of the grace of life, that your prayers be not hindered." 12. LOST POWERS.--Many young men after their union showed a marked difference. They lost much of their natural vivacity, energy, and strength of voice. Their powers of application, as business men, students, and ministers, had declined, as also their enterprise, fervor, and kindliness. They had become irritable, dull, pale, and complaining. Many cases of rheumatic fever have been induced through impoverishment, caused by excesses on the part of young married men. 13. MIDDLE AGE.--After middle age the sap of a man's life declines in quantity. A man who intends close application to the ministry, to scientific or literary pursuits, where great demands are made upon the brain, must restrain this passion. The supplies for the brain and nervous system are absorbed, and the seed diverted through sexual excesses in the marriage relationship, by fornication, or by any other form of immorality, the man's power must decline: that to this very cause may be attributed the failure and breakdown of so many men of middle age. 14. INTOXICATING DRINKS.--By all means avoid intoxicating drinks. Immorality and alcoholic stimulants, as we have shown, are intimately related to one another. Wine and strong drink inflame the blood, and heat the passions. Attacking the brain, they warp the judgment, and weaken the power of restraint. Avoid what is called good living: it is madness to allow the pleasures of the table to corrupt and corrode the human body. We are not designed for gourmands, much less for educated pigs. Cold water bathing, water as a beverage, simple and wholesome food, regularity of sleep, plenty of exercise; games such as cricket, football, tennis, boating, or bicycling, are among the best possible preventives against lust and animal passion.