82:1.8

As an institution, marriage, from its early beginnings down to modern times, pictures the social evolution of the biologic propensity for self-perpetuation. The perpetuation of the evolving human species is made certain by the presence of this racial mating impulse, an urge which is loosely called sex attraction. This great biologic urge becomes the impulse hub for all sorts of associated instincts, emotions, and usages—physical, intellectual, moral, and social.