Civilisation only ever hangs by a thread. Today one of those threads seems to have frayed, perhaps snapped. It is impossible to watch the footage coming out of Paris. Like videos of pornographic violence, all that can be done is to groan and turn away. It is not possible to watch the spire of Notre Dame collapse. It is not possible to watch the great cathedral consumed by fire.

Evelyn Waugh once said that in the event of a fire in his house, if he was able only to save his children or his library, he would save his library because books were irreplaceable. Only at a moment such as this is it possible to concede the slightest truth in that remark. Almost anything could be borne rather than the loss of this building.

There will be recriminations, of course. There will be disputes about budgets, and overtime and safety standards and much more. It is worth reading this piece from two years ago about the funding problems that existed around the cathedral’s restoration. But if Notre Dame can burn then all this is as nothing, because it tells us something too deep to bear. As I said a couple of years ago in a book, in some way the future of civilisation in Europe will be decided on what our attitude is towards the great churches and other cultural buildings of our heritage standing in our midst. Do we contend with them, hate them, ignore them, engage with them or continue to revere them? Do we preserve them?

Though politicians may imagine that ages are judged on the minutiae of government policy, they are not. They are judged on what they leave behind: most of all on how they treat what the past has handed into their care. Even if today’s disaster was simply the most freakish of accidents, ours would still be the era that lost Notre Dame.