Motherhood and the Relationships of the Sexes
Now, it is because of what sex-passion has come to be among us—its variety in desire and in result—that we are far more remote than pre-human and primitive parents from having marriage and parenthood settled so as to meet the desires and sex-needs of every one, as would be easily possible if the reproductive act could be regarded as being solely, or even chiefly, connected with the birth of children.