It is ordinarily said that criminal law is designed to protect property and to protect persons, and if society's only interest in controlling sex behavior were to protect persons, then the criminal codes concerned with assault and battery should provide adequate protection. The fact that there is a body of sex laws which is apart from the laws protecting persons is evidence of their distinct function, namely that of protecting custom.

If biologists so often forget the most universal of all biologic principles [variation], it is not surprising that men and women in general expect their fellows to think and behave according to the pattern that may fit the law-maker, or the imaginary ideals for which the legislation was fashioned, but which are ill-shaped for all real individuals who try to live under them.

The only unnatural sex act is that which you cannot perform.

Cheese crumbs spread before a pair of copulating rats will distract the female but not the male.

The range of variation in the female far exceeds the range of variation in the male.

The heterosexuality or homosexuality of many individuals is not an all-or-none proposition.

Art alone develops weaklings, science alone, monsters. Somewhere, somehow, we must combine the two.