The problem of the bisexual girl-boy or androgyne has been presented for the _learned professions_ in my AUTOBIOGRAPHY OF AN ANDROGYNE and THE RIDDLE OF THE UNDERWORLD. But to accomplish my three aims, it is necessary that the _general reader_ have instilled into his mind that sexual intermediates are not to blame for their cross-sex idiosyncrasies. Such knowledge could not besmirch the soul of the general reader, but only benefit him morally. In the present work I have a message for the general reader such as, in nearly every individual case, has never yet reached him. My God-given mission is to be one of the first to cry: “Child of English culture,[1] reflect a moment, and ask yourself whether you are at last, in this the most enlightened century of man’s existence, willing to grant justice and humane treatment to the androgyne and gynander? Do you still insist that these sexual cripples continue to suffer physical and mental torture for another century because your own pleasure bulks too large for you to hear and bear the truth about the despairing cross-sexed? Why should the Christian and the Jew have always regarded as the one unpardonable sin the union in one human body of the distinctive physical and psychic earmarks of the two recognized sexes? Why should they have pitied and assisted the club-footed and the deaf-mute, but always endeavored to grind sexual cripples to powder under their heels? There is indeed no worse crippling than the sexual. This is because sex, with all that it implies, is the principal physiological factor in life. Any abnormality of sex is truly the greatest of tragedies. [Sidenote: _Authors’ Trilogy._] Reader, what would have been your own attitude on this question if God had created you, or your son or daughter, a sexual intermediate, instead of some stranger about whose banishment, suicide, or murder you have read in the paper? Would you have driven the ill-starred son or daughter from home, and henceforth treated them as dead? Or would you, when their dead body was fished out of the river, be able to feel pity as did a father I read about in a New York paper, who exclaimed at sight of it: “Poor Jimmie! How you must have suffered!”[2] * * * * * My first three books on sexology form a trilogy. They together set forth all phases of the life experience of a bisexual university “man.” To only a trifling extent do they overlap. Thus the scientist wishing a full account of my unique life experience must read the entire trilogy. For I was predestined to an unusual role in the great drama we call “life.” I was brought into the world as one of the rare humans who possess a strong claim, on anatomic grounds as well as psychic, to membership in both the recognized sexes. I was foreordained to live part of my life as man and part as woman.