When Takis took a sculpture out of a survey about machinery and art, it was because he felt that the museum had not consulted him about his work's inclusion.
"The sculptor's intention is not to create a kind of Dadaist art, nor yet a Tinguely machine," Lawrence Campbell wrote, "but to demonstrate the esthetic possibilities of an actual magnetic force."
The sculptures of Takis (born Panayiotis Vassilakis) have waned from view over the past 20 years. Now, simultaneous exhibitions—a compact one at the Menil Collection in Houston and a comprehensive one…