In their current demands, Blankenhorn points out, gay and lesbian leaders are not asking for marriage with an adjective in front of it, but marriage itself. Therefore, what marriage is and why it matters is what this debate is all about. What exactly is this institution to which gay and lesbian activists are seeking access? Why do we have it in the first place? Where did it come from? What is it for? How is it changing? These are some of the hard questions The Future of Marriage confronts.