The Catholicism of today builds nothing so gorgeous as Notre-Dame in part because it has no 21st-century version of that grand synthesis to offer. The reforms of the 1960s, the Second Vatican Council and everything after, have left the church partially and unsuccessfully transformed, torn between competing visions of how to be Catholic in modernity, competing promises of renewal and reform, competing factions convinced that they are the firefighters inside Notre-Dame, and their rivals are the fire.

I belong to one of these factions (or to a faction within a faction; who can keep track?); I am a conservative of some sort, who fears that liberal Christianities usually end up resembling a post-inferno cathedral, with the still-grand exterior concealing emptiness within.

But I am also doubtful that anything so simple as a conservative “victory” will return the church to cathedral-raising vigor and make it feel, to outsiders, like something more than a museum whose docents all seem to hate one another. Especially given how often conservative Catholicism is in thrall to orthodoxies that are political rather than theological, how often — especially as it reacts to the destabilizing style of Pope Francis — its climate feels more like an airless bunker than a Gothic nave.

And it is impossible, as a Catholic, to be writing about this subject while the Cathedral of Notre-Dame is literally burning on Holy Week and not feel that everyone engaged in Catholicism’s civil wars is being judged, and found wanting, and given a harrowing lesson in what is actually asked of us.

The cathedral will be rebuilt; the cross and altar and much of the interior survived. But all preservation is provisional. The real challenge for Catholics, in this age of general post-Christian cultural exhaustion, is to look at what our ancestors did and imagine what it would mean to do that again, to build anew, to leave something behind that could stand a thousand years and still have men and women singing “Salve Regina” outside its cruciform walls, as Parisians did tonight while Notre-Dame burned.

What is the synthesis that could make that possible? What lies beyond the stalemates and scandal and anger of our strange two-pope era?

Go ask the Catholics of 3019 A.D. It’s for them to know, and us, if God wills it, to find out.