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

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.

The very general occurrence of the homosexual in ancient Greece, and its wide occurrence today in some cultures in which such activity is not taboo suggests that the capacity of an individual to respond erotically to any sort of stimulus, whether it is provided by another person of the same or opposite sex, is basic in the species.

There is a tendency to consider anything in human behavior that is unusual, not well known, or not well understood, as neurotic, psychopathic, immature, perverse, or the expression of some other sort of psychologic disturbance.

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.

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