In others, no such reference exists. There is no illusion of perspective, though there is sometimes one of depth – some rectangles detach themselves from the surface and seem to flat in front of the picture plane. If there is a figurative reference here, you have to search hard to find it. The clue, perhaps, might be the notion that, in a subtle way these compositions refer to the sister art of architecture. These paintings are buildings, in more than one sense, created for inspection by the mind. Your mind, as you stop to look.