By Dr. Donald DeMarco, Catholic Exchange - A metaphor needs a ground, just as an airplane needs a runway. It has no meaning when it is separated from the base from which it is launched. Marriage cannot be detached from its mooring and most assuredly not for political reasons. Beautiful things will derive from a good marriage, and they will be properly honored in poetical verse. But the genesis of marriage, that two-in-one intimacy between a man and a woman, will always be the way it is divinely described in the Book of Genesis.