Only the human mind invents categories and tries to force facts into separated pigeonholes.

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

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

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

We are the recorders and reporters of facts - not the judges of the behaviors we describe.

Few males achieve any real freedom in their sexual relations even with their wives. Few males realise how badly inhibited they are on these matters.

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.