"God has given us many desires that are right under certain conditions and wrong under others and He has given us reason with which to control our desires. It is right to eat when the food is our own, but wrong to eat if we have stolen the food. It is right to enjoy the attraction of one to whom our heart and life is given, but otherwise we are defrauding some one else. You can understand that you would not want the man you are to marry to have had familiarities with many other girls, neither would he like to think that other men had been permitted to be free with you. "If you were going to select a dress that was to last all your life long, you would not choose goods that had been handled and were shop-worn. Even so with husband and wife. Each likes to feel sure that the freshest, purest love of the heart and modesty of person has been kept unstained from the slightest unwarrantable familiarity." CHAPTER IV. "O Mother, I am so glad you are at home again. I had a lovely talk with father last evening, but it wasn't you. He gave me lots to think about, though. He said that mothers need to have such a broad education; that they should even be chemists, mother, think of that!" "Does that seem such a strange idea to you? Really they need to be much more than that. They should be good teachers, to instruct their children, wise judges, in order to know what justice is, doctors of medicine so as to understand the first symptoms of illness and how to treat it, and surgeons so as to know how to bind up wounds, treat cuts and bruises and even how to reduce a dislocated finger if necessary. They should be physiologists so as to understand the laws of bodily health, and psychologists so as to know and obey the laws of the mental development of their children." "O, mother! How can one girl learn all those hard things?" Mrs. Wayne smiled indulgently as she replied, "O, she won't have to learn all of them at once. Taken one at a time, through all the years preceding her marriage, she will find she can learn something of each without taxing herself too severely. For example, you can learn now how to take care of your own health, and that will help you to care for the health of your children when they come. You have already studied First Aid to the injured in your physiology class. When you go to College you will study psychology as a part of your course of study." "What does that big word mean, mother?" "Psychology means the science of mind. I said that mothers need to be psychologists; that is, students of the science of mind, so that they will understand the indications of the development of mind in their babies. A child gets the largest part of its education before it is six years old." "O, mamma, do you really mean that?"