Until the late eighteenth century, most societies around the world saw marriage as too vital an economic and political institution to be left up to the free choice of the two individuals involved, especially if they were going to base their decision on something as unreasoning and transitory as love.
"[Power] focused on the species body, the body imbued with the mechanics of life and serving as the basis of the biological processes: propagation, birth and mortality, the level of health, life expectancy and longevity, with all the conditions that can cause these to vary. Their supervision was effected through an entire series of intervention and regulatory controls: biopolitics of the population."