Every Christmas, I reread C.S. Lewis' novel "The Lion, the Witch and the Wardrobe." The holiday seems like the ideal time for an excursion into my imaginative past, and so I return to the paperback boxed set of "The Chronicles of Narnia" that my parents gave me for Christmas when I was 10. For me, Narnia is intimately linked with the season. I'm not alone. In Britain, stage productions of "The Lion, the Witch and the Wardrobe" are a holiday staple, for good reason. The book rests on a foundation of Christian imagery; its most famous scene is of a little girl standing under a lamppost in a snowy wood; and Father Christmas himself makes an appearance, after the lion god Aslan frees Narnia from an evil witch who decreed that it be "always winter, and never Christmas."
That I'm not a Christian doesn't much hinder my enjoyment of either the holiday or the book, but the presence of Father Christmas bothered many of Lewis's friends, including J.R.R. Tolkien. Tolkien, whose Middle-earth was free of the legends and religions of our world, objected to Narnia's hodgepodge of motifs: the fauns and dryads lifted from classic mythology, the Germanic dwarfs and contemporary schoolboy slang lumped in with the obvious Christian symbolism.
But Lewis embraced the Middle Ages' indiscriminate mixing of stories and motifs from seemingly incompatible sources. The medievals, he once wrote, enthusiastically adopted a habit from late antiquity of "gathering together and harmonizing views of very different origin: building a syncretistic model not only out of Platonic, Aristotelian and Stoical, but out of pagan and Christian elements."
Christmas as we now know it is much the same sort of conglomeration, and when people call for a return to its pure, authentic roots, they're missing an essential quality of the holiday. Narnia is a mongrel thing, and so is Christmas. As is often the case, this mongrelizing is the source of its strength.
Complaints about the corruption, dilution or fundamental impiety of Christmas have been made for centuries. The Puritans so mistrusted the holiday that its celebration was outlawed in 17th-century Boston. Around the same time, the German theologian Paul Ernst Jablonski asserted that Christmas amounted to a paganization of the authentic faith because the date, Dec. 25, had been appropriated from a festival for a Roman solar god.
(Some Christian scholars, including the current pope, have actually argued that the appropriation went the other way around, and the solar festival was in fact a heathen bid to co-opt the feast day of an increasingly popular monotheistic cult.)
On the other side, non-Christians who relish the holiday like to point out that many Christmas icons -- the decorated tree, the Yule log, mistletoe -- were originally sacred to Celtic and Northern European pagans.
Yet even the Yuletide customs that are supposedly pagan holdovers must be taken with a grain of salt. We have no written records of the cultures from which they supposedly derive; everything we know about them comes second- and third-hand from Roman or Christian writers pursuing their own agendas and relying, for the most part, on oral sources.