“Practically it is all right, but medico-legally it is wrong, to make the genitals the universal criterion in the determination of sex. Medico-legally, sex should be determined by the psychical constitution rather than by the physical form. There are thousands of physical females who feel themselves to be men and have the mental traits of men, and there are thousands of physical males who feel themselves to be women and have the mental traits of a woman. Should any blame be attached to such individuals when they conduct themselves according to their psychical sex?”