Therefore, why not plastic forms in motion? Not a simple translatory or rotary motion but several motions of different types, speeds and amplitudes c… - Alexander Calder

I started [in Paris, 1920's, making toys] right away, using wire as my main material as well as working with others like string, leather, fabric and wood. Wood combined with wire (with which I could make the heads, tails and feet of animals as well as articulating parts) was almost always my medium of choice. One friend of mine suggested that I should make bodies entirely of wire, and that is how I started to make what I called 'Wire Sculpture'. In Montparnasse, I became known as the 'King of Wire'.

My entrance into the field of abstract art came about as the result of a visit to the studio of Piet Mondrian in Paris in 1930. I was particularly impressed by some rectangles of color he had tacked on his wall in a pattern after his nature. I told him I would like to make them [Mondrian's flat painting] oscillate, he objected. I went home and tried to paint abstractly - but in two weeks I was back again among plastic materials.

The aesthetic value of these objects cannot be arrived at by reasoning. Familiarization is necessary.