Question: How do you get that subtle balance in your work? You put a disk here and then you put another disk that is a triangle at the other end and … - Alexander Calder

I think that at that time and practically ever since, the underlying sense of form in my work has been the system of the Universe, or part thereof. For that is a rather large model to work from.

I say nuclei, for to me whatever sphere, or other form, I use in these constructions does not necessarily mean a body of that size, shape or color, but may mean a more minute system of bodies, an atmospheric condition, or even a void. I.E. the idea that one can compose any things of which he can conceive.

Question: How did the mobiles start?
The mobiles started when I went to see [[w:Piet Mondrian|Mondrian [in Paris, 1930]. I was impressed by several colored rectangles he had on the wall. Shortly after that I made some mobiles.