Kinsey . . . has done for sex what Columbus did for geography.
Kinsey had published Sexual Behavior in the Human Male on 5 January 1948. His report had found that 10 percent of all American males are largely homosexual, and that half of all men in the United States have experienced homosexual arousal to the point of orgasm at least once since puberty. On 14 September 1953, Kinsey published Sexual Behavior in the Human Female. Based on his research, Kinsey concluded that:
The only unnatural sex act is that which you cannot [physically] perform.
At a time when any kind of human sexuality was rarely mentioned in public, and homosexuality was especially hidden, repressed, and punished, the Kinsey Reports came as a shocking revelation, with their statistical, scientific findings that homosexual behavior is more widespread than most people had suspected, and appears to be within the normal range of human behavior.
- Alfred C. Kinsey, Wardell B. Pomeroy, and Clyde E. Martin, Sexual Behavior in the Human Male (Bloomington, IN: Indiana University Press, 1948).
- Alfred C. Kinsey, Wardell B. Pomeroy, Clyde E. Martin, and Paul H. Gebhard, Sexual Behavior in the Human Female (Bloomington, IN: Indiana University Press, 1953).