"Why must art be static? You look at an abstraction, sculptured or painted, an entirely exciting arrangement of planes, spheres, nuclei, entirely without meaning. It would be perfect, but it is always still. The next step in sculpture is motion."
Alexander Calder was an American sculptor known for creating mobile kinetic sculptures and monumental stabiles. His work helped define modern abstract sculpture in the twentieth century. He remains one of the most influential sculptors of modern art.