Dewey and Tufts, Ethics, chap. XXVI. Scharlieb and Silby, Youth and Sex. C. Read, Natural and Social Morals, chap. VII. Anon, Life, Love, and Light (Macmillan), pp. 84-96. R. C. Cabot, What Men Live By, chaps. XXIV-XXIX. W. L. Sheldon, An Ethical Movement, chaps. XI, XII. C. F. Dole, Ethics of Progress, part VII, chap. III. Felix Adler, Marriage and Divorce, The Spiritual Meaning of Marriage. N. Smyth, Christian Ethics, pp. 405-15. B. P. Bowne, Principles of Ethics, part III, chaps. VIII, IX. W. E. H. Lecky, The Map of Life, chap. XIV. Stevenson, Virginibus Puerisque. G. E. C. Gray, Husband and Wife. J. Rus, The Peril and Preservation of the Home. Thompson and Geddes, Problems of Sex. H. Munsterberg, "Sex-Education" (in Psychology and Social Sanity). H. G. Wells, "Divorce" (in Social Forces in England and America). C. J. Hawkins, Will the Home Survive? Biblical World, vol. 43, p. 33. International Journal of Ethics, vol. 17, p. 181. For the data: United States Department of Commerce and Labor, Reports on Marriage and Divorce. Publications of the National League for the Protection of the Family (Secretary S. W. Dike, Auburndale, Massachusetts) and of the Society of Sanitary and Moral Prophylaxis (105 West 40th Street, New York). Howard, MATRIMONIAL INSTITUTIONS. Sutherland, ORIGIN AND GROWTH OF THE MORAL INSTINCT of the Moral Instinct, chaps. vii, ix. Lestourneaux, EVOLUTION OF MARRIAGE. CHAPTER XVIII FELLOWSHIP, LOYALTY, AND LUXURY EVERY man has to solve the problem of how far he will live for his smaller, personal self, and how far for that larger self that includes the interests of others. The general principles involved we have discussed in chapter XI; we may now proceed to consider their application to the concrete situations in which we find ourselves. What social relationships impose claims upon us? (1) The relations of husband and wife and of parenthood are most sacred and exacting, because they are voluntarily assumed, and because the need and possibilities of help are here greatest. A man or woman may without odium remain free from these obligations; but once they have made the vows that initiate the dual life, once they have brought a helpless child into the world, neither may evade the consequent responsibilities. If undertaken at all, these duties must be conscientiously fulfilled; and whatever sacrifices are necessary must, as a matter of course, and ungrudgingly, be made.