Males do not represent two discrete populations, heterosexual and homosexual. The world is not to be divided into sheeps and goats. Not all things are black nor all things white.

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.

If all persons with any trace of homosexual history, or those who were predominantly homosexual, were eliminated from the population today, there is no reason for believing that the incidence of the homosexual in the next generation would be materially reduced. The homosexual has been a significant part of human sexual activity since the dawn of history, primarily because it is an expression of capacities that are basic in the human animal.

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

The male's difficulties in his sexual relations after marriage include a lack of facility, of ease, or of suavity in establishing rapport in a sexual situation.

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.