To Leuven, on a beautiful Saturday, to the M museum, to see the Sol Lewitt exhibition, Colours. These twenty-four works, especially created for this exhibition and which will be effaced afterwards, are the coloured counterpart of the black-and-white exhibition of Lewitt’s works that we saw at the Pompidou Centre in Metz in May. What fascinates me about Lewitt’s work is not just its deliberately ephemeral nature but the fact that each new version of a particular work is different and therefore unique – different, because it will be drawn according to the dimensions of the wall on which it appears and because Lewitt’s instructions leave much room for subjective interpretation to the drawing teams. In effect, you can never see the same work twice. (Looking at one of the ink wash creations, with its beautiful pastel colours, I realized that Lewitt could easily have set himself up as an interior decorator!) Afterwards, we walked past Leuven’s reconstructed university library, with the names of so many New England universities and schools inscribed on its pillars (the library was burnt down in 1914, an act that shocked the world, and was reconstructed with donations, including many from American universities). This is magnum opus territority. With a fun fair in full swing in the Ladeuzeplein, it is impossible to believe that two destructive wars so recently came this way. Walking the dog around Berthem on the way back, though, the pill boxes and bunkers dotted about tell another story…