“.. the wall, the window or the door — and so many other images that parade in my canvases — are indeed there and I am far from trying to hide the fact. With this I mean that I do not think that images, in my works, should be considered as indifferent excuses to prop visual elements, as the 'subject-matters' were said to be for Impressionists and Fauves. From those 'subject-matters', it is further said, the ensuing abstractionists or Informalists liberated themselves. My walls, windows or doors — or at least my suggestions of them — do not avoid their responsibility and hold their full archetypal or symbolic weight.”

1945 - 1970, A Report on the Wall' 1970