NEW YORK — Robert Morris, one of the most controversial American sculptors of the post-World War II era as a founder of minimalism, a style of radical simplification that emerged in the 1960s and influences artists to this day, died Wednesday in Kingston, N.Y. He was 87.
His wife, Lucile Michels Morris, said the cause was pneumonia.
Mr. Morris was one of a generation of artists who embraced the minimalist credo, along with Donald Judd, Carl Andre, Dan Flavin, and others. But while his peers continued to work within the genre’s austere limits, Mr. Morris went on to explore an astonishing variety of stylistic approaches, from scatter art, performance, and earthworks to paintings and sculptures symbolizing nuclear holocaust.
His detractors, noting his tendency to borrow ideas from other artists freely, questioned his originality and authenticity. His supporters saw in him a mind too restlessly alive to the possibilities of art to be confined to any one style.
But nearly all agree that most of the major issues in art of the last half-century were highlighted in one phase or another in Mr. Morris’s prolific, mercurial career.
If his work puzzled some viewers, he was reluctant to explain it. In an interview with The New York Times in 2017, he said, “I would rather short-circuit the question and hide behind Chekhov’s remark that art should ask questions rather than give answers.”
Robert Eugene Morris was born on Feb. 9, 1931, in Kansas City, Mo., to Lora Pearl (Schrock) Morris and Robert Obed Morris. His father was in the livestock business, and his parents also briefly owned a dry-cleaning business.
He first studied art — but not sculpture — at the Kansas City Art Institute and then, in the early 1950s, at the California School of Fine Arts in San Francisco. After a stint in the Army Corps of Engineers, during which he served in Korea, Japan, and elsewhere, he attended Reed College in Oregon from 1953 to 1955.
Back in San Francisco, Mr. Morris made abstract expressionist paintings, which he showed in two solo exhibitions, and became involved in theater, dance, and film.
In 1956, he married Simone Forti, a dancer who would become a leading choreographer and teacher of modern dance. They moved to New York City in 1959 and became part of a downtown scene made up of avant-garde painters, musicians, dancers, and performance artists. There, Mr. Morris’s interests continued to lead in several directions. (His marriage to Forti ended in divorce in 1962, as did his second marriage, to Priscilla Johnson.)
Mr. Morris began producing sculpture: small neo-Dada works full of witty, self-referential effects, paradoxes, and puns, all made under the influence of Marcel Duchamp and Jasper Johns. “I-Box,” for example, had a small door in the shape of a capital letter I, which opened to reveal a full-length photograph of the artist wearing a grin and nothing else.
Mr. Morris exhibited these works in his first New York solo show, at the Green Gallery in 1963.
He pursued a master’s degree in art history at Hunter College in Manhattan, writing his thesis on the sculpture of Constantin Brancusi. He began teaching at Hunter in 1964 and continued to do so into his later years.
Interested in dance as well, he became involved in the Judson Dance Theater, a group committed to minimalist dance styles. Forti was a leading member, and Mr. Morris himself choreographed and performed in several Judson productions.
The importance of Mr. Morris’s minimalist work was not just in its introducing a new style of abstraction. Rather, it set up a new kind of relationship between the viewer and the artwork. Because the sculptures lacked the complex internal relationships of traditional composition, the viewer would focus on the object’s relationship to the architecture of the room and its effect on his or her perceptual experience of space, light, and shape.
This reorientation led the way for many different kinds of art to come, in which environmental — and, at times, flagrantly theatrical — experience would prevail over that of finely made objects.
In 1966, in Artforum magazine, he began to publish a series of essays called “Notes on Sculpture” in which he analyzed the new pieces that he and others were producing. These influential writings did almost as much to certify his importance as his sculptures did.
Mr. Morris extended the possibilities of minimalism and sculpture in general in a dizzying variety of ways into the 1970s. He produced elementary structures in semitransparent materials such as expanded steel mesh or translucent plastic, organized identical forms in serial groups, created optically confounding works using mirrors, built labyrinths, and began to explore less rigidly structured means of activating space.
He also created large wall hangings of thick felt — cut, folded, or draped — and he produced a major Stonehenge-like outdoor earthwork, “Observatory,” in Holland.
Mr. Morris’s reputation as an innovator working on all fronts was at its peak in the early 1970s. In a review in the Times in 1972, Peter Schjeldahl wrote, “Morris was, for a moment, a nearly transcendent art world presence, an artist who, it seemed, could do no wrong.”
Later in the decade, however, contemporary art began to change in ways unfavorable to Mr. Morris’s formalist, coolly cerebral sensibility. From the neoexpressionism of Julian Schnabel to the neopop protest art of Barbara Kruger, art became more representational, more personal, and more political, and Mr. Morris’s reputation for up-to-the-minute saliency was never again what it was in the ‘60s.
He did change with the tide, however, producing in the early 1980s darkly baroque meditations on the threat of nuclear destruction. In a series he titled “Firestorm,” he created heavy sculptural frames in which skulls, clawing hands, ropes, chains, phallic forms, and symbols of violence and conflict were cast; within, infernally glowing pastels evoking J.M.W. Turner abstractly envisioned the world’s fiery end.
In addition to his wife, whom he married in 1984, Mr. Morris leaves a daughter, Laura, and a sister, Donna Caudle. Mr. Morris, who died in Kingston Hospital, lived in Gardiner, N.Y.
Into the 1990s, Mr. Morris continued to produce draped felt works; heavy lead reliefs that recall his early, Jasper Johns-influenced works; and autobiographical installations using text and sound.
From start to finish, as a sprawling retrospective exhibition mounted by the Guggenheim Museum in 1994 showed, Mr. Morris defied the conventional rule of one style per artist.
Looking back on his career, he wrote in his introduction to “Continuous Project Altered Daily,” a collection of his essays published in 1993: “I never set out to prove or demonstrate so much as to investigate. And I never set out to affirm so much as to negate.”
Yet it is clear, too, that he was driven by an abiding belief in the power of art. “In art’s irrational games and its depth of feelings,” he wrote in a late essay, “in its awe and cynicism, its mournings and derisions, its anger and grace, it bears witness to a dark century.”