The manger or Macy's? Americans might well wonder which is the real shrine of Christmas, as they take part each year in a mix of churchgoing, shopping, and family togetherness. But the history of Christmas cannot be summed up so easily as the commercialization of a sacred day. As Penne Restad reveals in this marvelous new book, it has always been an ambiguous meld of sacred thoughts and worldly actions-- as well as a fascinating reflection of our...