"Concerning patterns of sexual behavior, a great deal of the thinking done by scientists and laymen alike stems from the assumption that there are persons who are “heterosexual” and persons who are “homosexual,” that these two types represent antitheses in the sexual world, and that there is only an insignificant class of “bisexuals” who occupy an intermediate position between the other groups. It is implied that every individual is innately—inherently—either heterosexual or homosexual. It is further implied that from the time of birth one is fated to be one thing or the other, and that there is little chance for one to change his pattern in the course of a lifetime. It is quite generally believed that one’s preference for a sexual partner of one or the other sex is correlated with various physical and mental qualities, and with the total personality which makes a homosexual male or female physically, psychically, and perhaps spiritually distinct from a heterosexual individual. It is generally thought that these qualities make a homosexual person obvious and recognizable to any one who has a sufficient understanding of such matters. Even psychiatrists discuss “the homosexual personality” and many of them believe that preferences for sexual partners of a particular sex are merely secondary manifestations of something that lies much deeper in the totality of that intangible which they call the personality. . . ."