Menurut Antoine Pevsner dan Naum Gabo lagi ;

 “And we do not measure our work by the yardstick of beauty, we do not weigh it on then scales of tenderness and feeling. The plumb line in hand, the look accurate as a ruler, the mind rigid as a compass , we are building our works as the universe builds. This is why, when we represent objects , we are tearing up the labels their owners gave them, everything that is accidental and local, leaving them with just their essence and their permanence, to bring out the rhythm of the forces that hide in them”