With its decision in Obergefell v. Hodges, the Supreme Court has brought the sexual revolution to its apex—a redefinition of our civilization’s primordial institution, cutting its link to procreation and declaring sex differences meaningless. The court has usurped the authority of the people, working through the democratic process, to define marriage. And it has shut down debate just as we were starting to hear new voices—gay people who agree that children need their mother and their father, and children of same-sex couples who wish they knew both their mom and dad.