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 CalderIf you can imagine a thing, conjure it up in space then you can make it... The universe is real but you can't see it. You have to imagine it. Then you can be realistic about reproducing it.
Alexander CalderA mobile is an abstract sculpture made chiefly out of sheet metal, steel rods, wire and wood. Some or all of these elements move, propelled by electric motors, wind, water or by hand.
Alexander Calder