I tried but failed to find this somewhere on the web. (I have it as an illustration in a 20-year-old magazine, which doesn't give the source.) *Lunatic*, n. One whose delusions are out of fashion.
Once you've entered the site, click on the paintings on the wall behind his picture.
I like very much the painting named "extrême-jonction"... "Dieu se rit des hommes qui se plaignent des conséquences alors qu'ils en chérissent les causes" Jacques-Bénigne Bossuet
BTW, Entre les trous de la mémoire (first room, on the left) was on the wall as giant poster in the eating room of the radio astronomy institute where I wrote my thesis. *Lunatic*, n. One whose delusions are out of fashion.