Though the American artist Paul Feeley is most often associated with Abstract Expressionism, he left the movement early on, no longer drawn to the aggressive energy of gestural abstraction. “I began to dwell on pyramids and things like that instead of on jungles of movement and action,” he told Lawrence Alloway in 1964. “The things I couldn’t forget in art, were things, which made no attempt to be exciting.” He began using symmetry in his paintings and wood sculptures, and employed curving shapes that became motifs. By the 1960s his style was diagrammatic. Feeley died in 1966, at age 55. Here, in his first U.K. retrospective in five decades, works from the early 50s to his last year are on view. The exhibition highlights Feeley’s enormous influence on his students, Helen Frankenthaler and Clement Greenberg among them. —E.C.