"I like to work from things that I see, whether they're man-made or natural or a combination of the two. Once in a while I work directly from something I've seen, like a window, or a fragment of a piece of architecture, or someone's legs; or sometimes the space between things, or just how the shadows of an object would look. The things I'm interested in have always been there. The idea of a shadow and a natural object has existed, like the shadow of the pyramids, or a rock and its shadow; I'm not interested in the texture of the rock, or that it is a rock, but in the mass of it, and its shadow."
Ellsworth Kelly