Of course, this does not mean that sex, either as a word or as a fact of nature, should be over-emphasized with people who are too young to appreciate the fundamental facts of life. As already suggested, it is not desirable that any parts of the curricula for schools should be known to the pupils as "sex" studies; but we need such terms as "sex-hygiene" and "sex-instruction" to indicate to teachers and parents that certain parts of the education of the children are being directed towards a healthy, natural and wholesome relation to sex. [Sidenote: "Sex" and "love."] It is absurd to suppose that the free, dignified, and scientific use of the word "sex" is going to make people more sensual, more uncontrolled, and more immoral. There is much more reason for fearing the free use of the word "love," which has both psychical and physical meanings so confused that often only the context of sentences enables one to determine which meaning is intended. In fact, many writers and speakers seek to avoid all possible misunderstanding by using the word "affection" for psychical love. Now, in spite of such confusion, and the fact that to many people the word "love" in connection with sex suggests only gross sensuality, we continue to use it freely and it is one of the first words taught to children. Why then do we not hear protests against using the word "love"? Simply because we have been from childhood accustomed to the word, first in its psychical sense, and it is only later that most of us have learned that it has a sensual meaning to some people. In short, familiarity with the word "love" in its psychical sense has bred in us a contempt for those who mistake the physical basis of love for love in its combined physical and psychical completeness. [Sidenote: Meaning of sex.]