I visited, this weekend, in Alsace, with Laurence, several castles, intact or in ruins, but always in height, that goes without saying, and surrounded by a sea of fir trees. Winter sun. Many tourists. There is obviously a real popular fascination for these places. A sentimental, cultural attachment. And even stronger than that: atavistic. I had the impression while wandering in these places that the crowd came there obscurely to seek a lost natural environment, a social organization of which it drags the nostalgia without being able to name it; and that perhaps also these old stones would have a new role to play in the new Middle Age which announces itself.