Experiencing nature and landscapes underpins the abstract, large, expressively painted canvases Raveel creates around 1960. He finds in them an ideal starting point to adopt a freer, more spontaneous style of writing. Yet he wants to structure and rationalise the whole. We therefore see the typical white squares popping up with a thick black outline during this period. It seems as if Raveel wants to get a grip on the intangible. The square counts as man's intervention in nature. The iconic square seems to fly like a flag in Roger Raveel's painterly universe.