Alexander Calder

Alexander Calder (1898–1976) changed what sculpture could be. Born into a family of artists (both his father and grandfather were sculptors), he started out as a mechanical engineer. That training never left him. Everything he made balanced engineering precision with playful, visual wit.

In 1926, living in Paris, Calder built a miniature circus from wire, cork, and scraps of fabric. He performed it in artists' studios, narrating in broken French and making sound effects. The performances drew crowds including Mondrian, Duchamp, and Miró. A visit to Mondrian's studio in 1930 triggered his shift to abstraction. Calder began making motorized sculptures, then abandoned the motors in favor of air currents. Marcel Duchamp named these balanced, hanging works "mobiles." Jean Arp named the stationary ground pieces "stabiles."

Calder produced over 22,000 works in his lifetime, from delicate hanging mobiles to monumental public stabiles like the 53-foot red Flamingo in Chicago. His Mercury Fountain (1937) sat alongside Picasso's Guernica at the Spanish Pavilion. Works are held at MoMA, the National Gallery of Art, the Whitney Museum, and Tate Modern. He received the Presidential Medal of Freedom posthumously in 1977.