Change the subject to human beings. Tell him how the race maintains its standard; but show him the difference between the methods employed. How the horse has his mate selected because of the female's good qualities, so that the offspring may possess like qualities, if not better, and that the selection is made by men who know their business, and have had long experience in the work. How, on the other hand, a young man with no experience is permitted to choose any woman he may fancy irrespective of her qualifications. As a consequence, we have all kinds of children, good and bad, feeble and strong, honest and dishonest, some degenerates from birth, some criminal, and many diseased and inefficient, few of them "winners." It is an easy matter to preach a little sermon from this text. Show him how essential it is to select the mother of one's children wisely, to know if there is disease in the future wife's blood, if her family history is good, if her temperament is suited to his, if her domestic qualities are satisfactory, if her principles are moral and normal, and if she understands and appreciates the true object and function of marriage. Show him also the element of justice involved in the marriage contract; that he must give what he exacts, that if he expects a healthy and normal wife, he must be healthy and normal himself; if he expects purity and cleanliness he must give purity and cleanliness; if he expects to mate with a fit female he must be an efficient and fit male. Remember that every act, deed, thought, and aspiration is regulated by laws which one cannot fool with, or disobey, without reaping a harvest which will conquer, crush and ruin you, no matter how clever or smart you may think yourself. Show him the wisdom of the breeders' habit of never permitting sexual liberties in a too young stallion. For the same reason the boy must conserve his strength and virility for the marriage state and for the function of procreation. In a further talk, the father may extend this subject and gradually lead up to the "consequences" of the unclean life. The boy will be ready for this talk and will evince an interest in it that will be encouraging and promising.