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 c… - Alexander Calder

Question: Is it true that Marcel Duchamp invented the name “mobile” for your work?
Duchamp named the mobiles and Arp the stabiles. Arp said, "What did you call those things you exhibited last year? Stabiles?"

Therefore, why not plastic forms in motion? Not a simple translatory or rotary motion but several motions of different types, speeds and amplitudes composing to make a resultant whole. Just as one can compose colors, or forms, so one can compose motions.

At that time (last Spring) I did not consider this medium to be of any signal importance in the world of art; merely a very amusing stunt cleverly executed.... However, wishing to return to Paris, I felt it would be quite justifiable to have an exhibition here, where "clever stunts" are highly appreciated, so I came over 3 months ago and set to work, carving wood and twisting wire. These new studies in wire, however, did not remain the simple modest little things I had done in New York. They are still simple, more simple than before; and therein lie the great possibilities which I have only recently come to feel for the wire medium.