Although the understanding of marriage as limited to a union of a man and a woman is undeniably the predominant one, if we have learned anything from the significant evolution in the prevailing societal views and official policies toward members of minority races and toward women over the past half-century, it is that even the most familiar and generally accepted of social practices and traditions often mask an unfairness and inequality that frequently is not recognized or appreciated by those not directly harmed by those practices or traditions. It is instructive to recall in this regard that the traditional, well-established legal rules and practices of our not-so-distant past (1) barred interracial marriage, (2) upheld the routine exclusion of women from many occupations and official duties, and (3) considered the relegation of racial minorities to separate and assertedly equivalent public facilities and institutions as constitutionally equal treatment...
... As past cases establish, the substantive right of two adults who share a loving relationship to join together to establish an officially recognized family of their own — and, if the couple chooses, to raise children within that family — constitutes a vitally important attribute of the fundamental interest in liberty and personal autonomy that the California Constitution secures to all persons for the benefit of both the individual and society.
Read the rest of the California Supreme Court ruling. It is an absolutely BEAUTIFUL application of real law as it applies to the civil institution of 'marriage'.