The boy and girl, now young man and young woman, must both learn that prostitution is a social sin:[39] the "scarlet woman" has been truly called the eternal priestess bearing the sins of humanity. This is a vast theme; we have got beyond the realm of mere sex education;--but truth is one, and life is one, and neither logic nor humanity will consent to our stopping short of the whole truth. Social intelligence--the illumination of man's life with man--the scientific and spiritual comprehension of the apostolic dictum, "We are all members one of another"--and "if one member suffer, all members suffer with it"--these are the great arrears of education. But there never was a time when the spirit of man moved so rapidly forward as here and now, and the movement for sex education is but one striking phase of the great advance. FOOTNOTES: [30] An examination of tables of contents and indexes of standard school texts in nature study and biology will reveal the almost universal absence of all ideas relating to sex and reproduction. There are two or three recent exceptions. [31] G. Stanley Hall, _Educational Problems_, vol. I, pp. 388-97, Thomson and Geddes, _Problems of Sex_, pp. 5-17. [32] Thomson and Geddes, _op. cit._, pp. 46-52; Saleeby, _Parenthood and Race Culture_; Morrow, _Social Diseases and Marriage; Hall, Educational Problems_, vol. I, pp. 424-43. [33] Fisher, _National Vitality_; Hall, _Youth_, chaps. II, V, VI, XII. [34] "What makes a Magazine?" _Twentieth Century Magazine_, September, 1912, pp. 11-20; _The Exploitation of Pleasure._ Russell Sage Foundation. [35] See Mrs. Woodallen Chapman, _The Moral Problem of the Children_, esp. pp. 61-93. Also the chapter in this book on the education of children. [36] An epoch-marking book in this field is Miss Torelle's _Plant and Animal Children and How They Grow._ (Heath.) See also pamphlet, _The Origin of Life_, by R.E. Blount. (Scott, Foresman & Co.) [37] "The Teaching of Sex in Schools and Colleges," _Social Diseases_, October, 1911. Addresses by G. Stanley Hall, Maurice A. Bigelow, Josiah Strong, Charles W. Eliot, and Mary Putnam Blount, _Sexual Reproduction in Animals: the Purpose and Methods of teaching it._ Proceedings N.E.A., 1912, pp. 1324-27. [38] Hall, G.S., _Adolescence_, vol. I, pp. 459-62. [39] Jane Addams, _A New Conscience and an Ancient Evil._ CHAPTER VIII TEACHING PHASES: FOR CHILDREN _By William Greenleaf Eliot, Jr._