What Is Marriage?, reviewed

What Is Marriage?, the new book by Sherif Girgis, Ryan Anderson, and Robert P. George, is clear, tightly reasoned, and a remarkably fast read for a dense philosophical argument. It should be instantly recognized as a leading statement of the case against same-sex marriage.  Nonetheless, the argument doesn’t work.

I’ve just reviewed the book for Commonweal magazine, here.  The review has already provoked a response from one of the authors, who promises that he will shortly have more to say.