If 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.
Source: In The Artist's Voice, by Katherine Kuh, 1960.
-- Alexander Calder, (Jul 22 1898-1976), US sculptor; He invented the mobile, delicately balanced suspended moving sculptors, e.g, Spiral, 1958.