Since I sculpture my interest for stones has increased with regard to origin, structure, pattern, colour and stratification. When I look for suitable rocks I pay special attention to these characteristics. Recently there was an exhibition in Museum Boymans with the intriguing title The beauty of science. The exhibits were a large amount of pictures, films and videos from the various sciences. Geologist Wiersma contributed with eighty images.which could be seen for a few seconds only. When I saw this show I entered a wondrous world of abstract and colourful shapes. Shapes which has inspired me in painting rocks. Wiersma’s book Exposures of mineral and rock containing many images also exhibited in Museum Boymans is another source of inspiration.