The George Lindemann Journal by George Lindemann

From oil on canvas to beeswax on walls might seem an aesthetic stretch to some, but the Phillips Collection doesn't see it that way.

The Phillips Collection, Washington, D.C./Lee Stalsworth

Wolfgang Laib's 'Wax Room,' opening Saturday at the Phillips Collection.

This internationally known and respected boutique institution, the first modern art museum in America, is about to unveil its first permanent installation in more than 50 years. And the pervasive feeling in-house is that the new arrival—a beeswax chamber designed by conceptual artist Wolfgang Laib, opening Saturday—couldn't be more true to the vision of Duncan Phillips (1886-1966) when he opened his private collection to the public in 1921.

"Duncan wanted the museum to be an intimate experience and have a spirit of experimentation," says Dorothy Kosinski, director of the Phillips. "A wax chamber by Wolfgang would be the biggest, most powerful expression of that spirit."

The German-born Mr. Laib has been creating beeswax chambers—small spaces lined with beeswax, gently lighted by a single hanging bulb—for more than 25 years. He uses hundreds of pounds of pure melted beeswax much like plaster, smoothly coating walls and ceilings until they almost resemble yellow marble—except with a warm glow.

The spaces offer room for perhaps two people comfortably but are said to be best visited alone. (The room at the Phillips, a former storage closet, is 6 feet wide by 7 feet deep and 10 feet high.) "There's a feeling you get inside the space that can't really described," says Mr. Laib, a diminutive, almost fragile-looking man with a voice barely above a whisper. "But it moves you."

The aroma of the beeswax is "totally seductive," Ms. Kosinski says, employing the kind of sensual language most often used to describe Mr. Laib's chambers. The intense color of the wax and its close proximity to your own skin in an austere space have also been cited as evoking a curiously visceral experience that is also meditative and spiritual. "It's really a new way of entering the artist's world," says Susan Behrends Frank, associate curator of research for the museum.

Mr. Laib's installations—involving other natural substances, such as pollen and rice, as well as beeswax—have been displayed at prominent museums and galleries around the world, including New York's Museum of Modern Art. Ms. Kosinski fully expects that visitors may not know what to make of the chamber when they see it. "But people being slightly perplexed is maybe not a bad thing," she adds.

Duncan Phillips might well agree. Though initially his collection consisted largely of Impressionist paintings, hardly controversial by the time he acquired them, he soon became known for bucking mainstream taste. He was one of the earliest patrons of the American modernists John Marin and Arthur Dove, and he bought the late work of Pierre Bonnard (1867-1947) in depth after World War II, a period when it was dismissed as emptily decorative. And Phillips's admiration for Abstract Expressionism, when that was still a suspect style, is evident in pieces by Richard Diebenkorn and Willem de Kooning, among others.

In 1960, six years before his death, Phillips added a permanent exhibit of four Mark Rothko oils to be housed in a dedicated room. No other artist had received such an honor there. While Phillips designed the Rothko Room, as it came to be known, the artist was directly involved with deciding which walls the color-field paintings should hang on, the kind of lighting and even furniture that should be in the room. "I think it's the only exhibit Rothko himself installed," Ms. Kosinski says.

Now, for only the second time in its history, the Phillips Collection is dedicating another space for permanent residence, and Rothko has a lot to do with it. Two years ago, while participating in the museum's "Conversations With Artists" series, Mr. Laib stepped into the Rothko Room for the first time and was transported by "a very emotional, deep feeling," he says. "Like being in another world." Not unlike the effect Mr. Laib seeks in beeswax chambers.

Until then, Mr. Laib had concentrated on pieces that could easily tour. But he says he had begun to think it was "important that some things should stay, be permanent." He thought a permanent wax chamber in the Phillips would be ideal for intertwining reasons: The compatibility he felt between the color-fields and his wax chambers, and the chance to dispel what Mr. Laib has long considered a facile comparison some have made between his work and Rothko's. Mr. Laib's pollen pieces consist of the brightly colorful substance, which he gathers from near his home in southern Germany and then feathers on a dark platform, prompting a reaction he says he has heard too often—"Rothko on the floor." (Mr. Laib's "Pollen From Hazelnut" installation is on display at MoMA through March 11.)

"I have a deeper, more complex relationship with Rothko," Mr. Laib says, "and a permanent room would demonstrate that." His room is in the center of the original Phillips mansion; the Rothko room is at the far end of the Sant Building, an extension added in 2006.

"My immediate reaction," says Ms. Kosinski, recalling when she learned of Mr. Laib's desire to install a permanent beeswax chamber in the Phillips, "was that he's right. It would make total sense to have it here."

The Phillips had been exhibiting contemporary art, but Ms. Kosinski saw an opportunity for "the perfect expression of the desire to experiment, to let viewers have encounters with art on their own terms," she says, thus reinvigorating a key component of the museum's original mission.

"Duncan Phillips started off as a kind of timid collector," Ms. Behrends Frank says. "But toward the end of his life he made a really bold move by creating the Rothko Room. And now the beeswax chamber is really bold."

"Besides," adds Ms. Kosinski, "it's just cool."

Mr. Triplett is a writer in Washington

Wendell Castle’s installation “A New Environment” is on view at Friedman Benda in Chelsea.The cantilevered staircase at right leads to a treehouse-like pod.

The American designer Wendell Castle is known for his idiosyncratic, organic and slightly surreal furniture, which he has been producing in laminated wood, plastic and other materials since the 1960s, and which is highly collectible. Castle, who turned 80 in 2012, showed his work at Design Miami last month, and today his exhibition “A New Environment” opens at Friedman Benda in Chelsea. (Another Castle show, “Volumes and Voids,” is on view just upstairs from Friedman Benda at the Barry Friedman Gallery through Jan. 26.)

The exhibition’s centerpiece is a massive, arresting environment of stack-laminated, carved wood that is rasp-finished and stained black. It comprises a modular platform, three sculptural chairs, a totemlike structure studded with LEDs and a cantilevered spiral stair that leads to a podlike chamber, lined in flokati carpet, which offers snug lounge seating for one, complete with reading light, shelf and several openings to let in light and air. It’s kind of a treehouse for grown-ups — rich ones, that is. At this writing, the price of the environment had not been set, but Castle said that it would likely be in the vicinity of a $1 million.

This is Castle’s largest work to date. It is a follow-up of sorts to his 1969 piece “Environment for Contemplation,” which also featured a pod but which was set on the floor. “I wanted to put something in the air,” he said. A steel structure reinforces the central column and stair treads; as the designer explains, this is necessary to support the pod, which weighs about 1,000 pounds.

From left: the pod, which is lined in flokati carpet, has built-in lounge seating for one; three additional pieces in the exhibition include “The Light of Darkness,” which combines a cantilevered chair, a table and a light.

On the fringes of the environment are three other pieces — a settee, a desk and a chair with its own table and light — with the same biomorphic forms or, as Castle calls them, “ellipsoids, kind of mushed together.” He cites the artists Henry Moore, Joan Miro, Jean Arp and Constantin Brancusi as early influences, but it’s clear that they’ve stayed with him. “I loved the idea of a ‘soft’ vocabulary, and still do,” he said. Castle enjoys chewing over ideas that have provoked him for years, but now he’s doing it with the aid of a robot, which he said will help to “carve some crazy-shaped voids,” since it can work in smaller spaces than traditional woodworking tools.

Next on the horizon is an exhibition in the fall at the Carpenters Workshop Gallery in Paris. There will be at least one bronze piece in the show, and Castle is experimenting with even rougher textures. For now, however, he was busy putting the finishing touches on the environment before the opening party. And when told that the piece’s outsized scale really called for its own, specially designed space, Castle replied, “I’ve thought about how to do that room.”

“A New Environment” is on view at Friedman Benda, 515 West 26th Street, through Feb. 9.

The artist Chuck Close giving a private tour of his show to students from Bridgeport, Conn.

By PATRICIA COHEN

Published: December 18, 2012

Stationed in front of one of his large self-portraits, the artist Chuck Close raised his customized wheelchair to balance on two wheels, seeming to defy the laws of gravity.

The chair’s unlikely gymnastics underlined the points that Mr. Close was making to his audience, 40 seventh and eighth graders from Bridgeport, Conn.: Break the rules and use limitations to your advantage.

The message had particular resonance for these students, and a few educators and parents, who had come by bus on Monday from Roosevelt School to the Pace Gallery in Chelsea for a private tour of Mr. Close’s show. Roosevelt, located in a community with high unemployment and crushing poverty, recently had one of the worst records of any school in the state, with 80 percent of its seventh graders testing below grade level in reading and math.

Saved from closure by a committed band of parents, the school was one of eight around the country chosen last year to participate in Turnaround Arts, a new federally sponsored public-and-private experiment that puts the arts at the center of the curriculum. Arranging for extra funds for supplies and instruments, teacher training, partnerships with cultural organizations and high-profile mentors like Mr. Close, Turnaround is trying to use the arts to raise academic performance across the board. “Art saved my life,” Mr. Close told the children. And he believes it can save the lives of others, too.

So now he was giving a pizza party and answering a question about why he started to paint.

“I wanted people to notice me, not that I couldn’t remember their faces or add or subtract,” he said, referring to the learning and neurological disabilities that set him apart from his classmates when he was growing up in Monroe, Wash.

A terrible writer and test-taker, Mr. Close used art to make it through school. Instead of handing in a paper, he told the children, “I made a 20-foot-long mural of the Lewis and Clark trail.”

Starting in Pace’s large central gallery, where his giant portraits of other artists like Philip Glass, Paul Simon and Laurie Anderson looked on, Mr. Close told the group that “everything about my work is driven by my learning disabilities.”

Born with prosopagnosia, a condition that prevents him from recognizing faces, Mr. Close explained that the only way he can remember a face is by breaking it down into small “bite-sized” pieces, like the tiny squares or circles of color that make up his paintings and prints.

“I figured out what I had left and I tried to make it work for me,” he said. “Limitations are important.”

With Mr. Close were a few other members of the President’s Committee on the Arts and the Humanities, which helped develop the Turnaround program. One of them, Damian Woetzel, a former principal dancer with the New York City Ballet who is a mentor to two other Turnaround schools, picked up on his theme.

“In dance we limit ourselves, as well,” he said. “There are five positions and everything comes from that,” he added, quickly demonstrating the basic ballet poses.

Filling out the cultural spectrum were the Broadway producer Margo Lion, a chairwoman of the committee, and the musicians Cristina Pato, Shane Shanahan and Kojiro Umezaki, all members of the Silk Road Ensemble, an international collaboration founded by the cellist Yo-Yo Ma, who is also a committee member and a mentor. One by one, they entered from different doors, startling the students with an impromptu concert featuring a tambourine, a gaita (a Spanish bagpipe) and a Chinese flute.

Clapping and stamping in time to the music, Mr. Woetzel soon turned the gallery’s open space into a dance floor. A couple of students whipped out phones to record the proceedings, while others raced across the room to avoid getting pulled in as participants. One reluctant dancer, captured by Rachel Goslins, a filmmaker and the executive director of the president’s committee, rolled his eyes and mouthed “Oh my God” as she circled him around the floor. Other students joined hands and began dancing as Ms. Lion and the school principal, Tania Kelley, her head flung back, swung each other around.

Mr. Close swerved through the crowd in his wheelchair.

“I never danced before,” Carolyn Smith, 13, said excitedly when the music stopped. “Usually I sing.” Carolyn was the lead in the school’s production of “The Wiz” last year. A brain tumor had caused her to miss so much school that her literacy teacher initially wanted her to turn down the part and focus on catching up, Ms. Goslins said. But being in the play — and reading and memorizing the script — helped her reading skills so much, Ms. Goslins said, that the literacy coach later told her, “I’m a believer.”

The afternoon offered a series of firsts for many of the students. Most had never seen such instruments, heard of Mr. Simon or Mr. Glass, or even visited Manhattan.

“It’s pretty cool to be in New York,” said David Morales, 14, who later asked Mr. Close about his technique, explaining, “I like how he makes it, how it comes all together.”

David, like the other Roosevelt students, had studied Mr. Close’s work in class and met him when he visited the school last month. So Mr. Close patiently answered questions.

“Is it easy to make these pictures?” (Well, it can take a while, Mr. Close replied.)

“How do you know what colors to use?” (Trial and error.)

“Can you draw? (Yes.)

“There is no artist who enjoys what he does every day more than I do,” Mr. Close told the group, setting off applause from the students. Repeating advice he often gives to young artists, he said: “Inspiration is for amateurs. The rest of us just show up for work.”

When the bus arrived for the return trip, Ms. Pato and Mr. Shanahan again took up their instruments, this time to lead a parade of clapping students and teachers out the door.

Carolyn Smith, a pink rose in her hair, paused at the doorway and turned to Mr. Close. “I had a blast,” she called out. “Bye, Chuck. See you later.”

AFTER thieves broke into the Kunsthal Museum in Rotterdam, the Netherlands, on Monday night and stole a king’s ransom’s worth of paintings by the likes of Picasso, Monet, Matisse and Gauguin, the public and the press were shocked. As usual, a combination of master art thieves and faulty security was blamed. But this seductive scenario is often, in fact, far from the truth.

Most of us envision balaclava-clad cat burglars rappelling through skylights into museums and, like Hollywood characters, contorting their bodies around motion-detecting laser beams. Of course, few of us have valuable paintings on our walls, and even fewer have suffered the loss of a masterpiece. But in the real world, thieves who steal art are not debonair “Thomas Crown Affair” types. Instead, they are the same crooks who rob armored cars for cash, pharmacies for drugs and homes for jewelry. They are often opportunistic and almost always shortsighted.

Take the 1961 theft of Goya’s “Duke of Wellington” from the National Gallery in London. While all of Britain believed that the Goya was taken by cunning art thieves, it was actually taken by a retired man, Kempton Bunton, protesting BBC licensing costs. (He apparently stole the painting by entering the museum through a bathroom window.) In 1973, Carl Horsley was arrested for the theft of two Rembrandts from the Taft Museum in Cincinnati. Later, after serving a prison term, he was arrested for shoplifting a tube of toothpaste and some candy bars.

The illicit trade of stolen art and antiquities is serious, with losses as high as $6 billion a year, according to the F.B.I. There have been teams of thieves who have included art among their targets, like the ones who stole a Rembrandt self-portrait from the National Museum in Stockholm in 2000. (The only buyer they found was an undercover F.B.I. agent.) But in general, it is incredibly rare for a museum to fall victim to a “professional” art thief. The reason is simple: the vast majority of people who steal art do it once, because it is incredibly difficult and because it is nearly impossible to fence a stolen masterpiece.

The wide attention that a high-value art heist garners makes the stolen objects too recognizable to shop around. And there are very few people with enough cash to purchase a masterpiece — even for pennies on the dollar — that they can never show anyone. Once an art thief realizes this, he turns to other endeavors. Meanwhile, the stolen treasures lie dormant in a garage or crawl space until he figures out what to do with them.

It’s easy — and sometimes justified — to criticize security systems as flawed or inadequate, but securing a museum is uniquely challenging. Consider this: The goal of an art museum is to make priceless and rare art and antiquities accessible to the public. They are among society’s most egalitarian institutions. Contrast that with a jewelry store or a bank, where armed guards and imposing vaults are the norm. No one expects to be able to be alone with diamonds worth thousands, but museumgoers do expect an intimate experience with masterworks worth millions. Clearly, it is a daunting task to provide robust security without disturbing the aesthetics of the artwork and its environment.

So what is the remedy for the all-too-frequent scourge of art theft? Museums must build systems that cannot be compromised by a single error or failure. Thieves should have to overcome several layers of security before they can reach their target and several more on the way out. At the Isabella Stewart Gardner Museum, we took such an approach after the 1990 theft of several masterpieces — a crime that hasn’t been solved. This not only makes it more difficult to steal and get away with stolen art, but it gives the police precious extra minutes to respond to alarms, especially if, as in Rotterdam, they sound at night.

When art is stolen, local law enforcement should focus on the right sort of criminals rather than conjecture about multinational art theft rings. The key to finding these missing needles in the haystack is to make the haystack smaller; homing in on the most likely suspects quickly is essential to recovering the stolen item. The F.B.I.’ s Art Crime Team has gathered impressive intelligence on who steals art and what becomes of it. For instance, they’ve learned that upward of 90 percent of all museum thefts involve some form of inside information. So often the best approach is to look at active local robbery gangs, and to investigate connections between past and present employees and known criminals. Enhanced employee background checks and discreet observation of visitor behavior also help to deter thefts.

Confronting these realities is essential to preventing more pieces of our cultural heritage from being lost.

PARIS — With impeccable timing and taste, thieves in the wee hours of Tuesday morning plundered an art museum in the Netherlands that was celebrating its 20th birthday and made away with seven borrowed paintings, including valuable works by Picasso, Monet, Gauguin, Matisse and Lucian Freud.

The Kunsthal museum in Rotterdam — which was exhibiting a private collection owned by the Triton Foundation — was closed to the public after the theft, but the bare spaces on its walls were visible to photographers through windows in its modern building by Rotterdam’s museum park and busy Maasboulevard.

The theft was the latest alarm about museum security in Europe, now a prime hunting ground for art thieves. In 2010 five paintings, including a Picasso and a Matisse, together valued at about 100 million euros, or about $130 million, were stolen from the Musée d’Art Moderne in Paris; they are still missing.

Police investigators combed the grounds of the museum and studied surveillance video for clues to the burglary, which they said happened about 3 a.m. and set off an alarm linked to a security agency. But by the time police arrived soon after, the works had vanished.

The art, part of a collection amassed by a Dutch investor, Willem Cordia, who died in 2011, was exhibited in public for the first time last week at the Kunsthal, which does not have a collection of its own. The stolen paintings span parts of three centuries: Meyer de Haan’s “Self-Portrait” of 1890 and Gauguin’s 1898 “Girl in Front of Open Window”; Monet’s “Waterloo Bridge, London” and “Charing Cross Bridge, London,” both from 1901; Matisse’s 1919 “Reading Girl in White and Yellow” and Picasso’s 1971 “Harlequin Head”; and Freud’s haunting 2002 portrait “Woman With Eyes Closed.”

The theft “was carefully thought out, cleverly conceived and it was quickly executed, so that suggests professionals,” said Charles Hill, a retired Scotland Yard art detective turned private investigator who went undercover to retrieve a version of “The Scream,” by Edvard Munch, after it was stolen in 1994 in Oslo.

“The volume,” he added, “suggests that whoever stole it owes somebody a lot of money, and it’s got to be a major-league villain.”

“My best guess is that someone doesn’t have the cash to repay a loan,” he said.

Marc Masurovsky, a historian and an expert on plundered art in Washington, noted the possibility that the theft was “a contract job,” adding: “These works were picked out. Could it be they had been targeted well before the theft, and the exhibit was the opportunity to strike?”

Willem van Hassel, the chairman of the Kunsthal’s board, announced the closing of the museum on Tuesday and later held a news conference to declare that adequate security measures had been taken.

At the same conference, the museum’s director, Emily Ansenk, said that night measures involved “technical security,” with no guards but camera surveillance and alarms. Museum officials said that the police had arrived on the museum grounds within five minutes of the alarm.

Ms. Ansenk told reporters that the burglary “has hit the art world like a bomb” and described it “as a nightmare for any museum director.” Kunsthal officials declined to estimate the value of the stolen works, though experts say they are collectively worth many millions of dollars, possibly hundreds of millions. Still, it would be difficult for thieves to sell such easily identifiable artworks, contributing to suspicions about underworld finances.

“I think it’s a form of repayment in kind, a barter — 'I don’t have cash, but I have these paintings,’ ” said Mr. Hill, the art investigator.

Kunsthal officials vowed that the museum would reopen on Wednesday.

-By DOREEN CARVAJAL

Banker Herb Allen's family plans to auction one of Monet's water lily paintings for between $30 million and $50 million. Collectors are buying famous works on hopes they retain their value in the current economy.

In another sign that the smart money set is selling art this auction season, Christie's plans to auction off a Claude Monet painting of a water lily pond for between $30 million and $50 million. The painting was donated to a school by the family of investment banker Herb Allen.

The planned sale next month comes as prices for Monet's watery scenes continue to climb, buoyed by interest from emerging collectors in China and Europe who think values for name-brand artists will hold up during times of economic uncertainty even if prices for lesser-known painters plummet.

Monet's Water-Lily series—the artist painted more than 160 views of his garden pond at Giverny, France between 1905 and his death in 1926—seem particularly popular. Five of the artist's priciest paintings at auction depict his garden, including "The Lily Pond," a 1919 example that Christie's auction house sold to a European buyer for $80.4 million at the peak of the last market in 2008.

"Water Lilies," a painting that dates from 1905 and shows mint-green lily pads bobbing atop a periwinkle pool, will be offered at Christie's evening sale of Impressionist and modern art in New York on Nov. 7.

Christie's specialist Conor Jordan said Chinese interest is already piqued by "Water Lilies," so he's shipping it to Hong Kong next week so potential bidders can take a closer look.

Mr. Allen, the founder of the annual mogul-fest in Sun Valley, Idaho, said his father bought the painting in 1979 with his wife, Ethel Strong Allen. After Mr. Allen's father died in 1997, the painting remained in the collection of his stepmother, who died in June.

Mr. Allen said the school is also auctioning off a pair of Impressionist paintings by Camille Pissarro and Alfred Sisley that were included in his stepmother's bequest.

Pissarro's 1895 landscape, "Apple Trees and Haymakers, Eragny," shows a pair of women using pitchforks to rake hay into piles in an apple orchard near Pissarro's home in Eragny, France. Christie's estimates the work will sell for at least $2.5 million.

Pissarro's performance at auction has been patchy lately, with several works going unsold, but collectors tend to pay a premium for scenes like this one that show Pissarro's signature way of painting long, afternoon shadows.

Christie's also expects to get at least $2.5 million for Sisley's "Alley of Poplars at Moret on the Bank of the Loing," an 1890 view of a poplar-lined path near a riverbank in the French town of Moret. Sisley's auction record is similarly hit and miss these days, but his poplar series still seems to find plenty of takers: Seven of the artist's priciest works at auction feature riverbank views of Moret—including an 1891 example that broke the artist's auction record when it sold for $5.7 million at Sotheby's five years ago.

Mr. Allen said his stepmother's will bequested all three paintings to his prep-school alma mater, Hackley School, in Tarrytown, N.Y.

-By Kelly Crow

LONDON—British authorities are searching for a man who took responsibility for defacing a valuable Mark Rothko canvas with black paint at the Tate Modern museum on Sunday afternoon.

The man walked up to one of Rothko's murals—an untitled 1958 painting often referred to as "Black on Maroon"—and tagged it with the words: "Vladimir Umanets '12, a potential piece of yellowism." The vandal then quickly left the building.

The incident was witnessed by Tim Wright, a 23-year-old marketing executive from Bristol, England, who said he "turned around and heard this scratching sound," only to see a young man finishing his letters on the Rothko painting.

"It was all very surreal," Mr. Wright said. "One minute he was sat down, and the next he had climbed over a little barrier and was knelt down doing his tag." Mr. Wright snapped a picture of the defaced painting—marked with the black letters in the bottom corner— and uploaded it to Twitter.

Vladimir Umanets, an artist working in London who has published a "Manifesto of Yellowism," claimed in several British media outlets on Monday, including ITV and the Guardian and Evening Standard newspapers, that he had defaced the painting, describing his act as art. Mr. Umanets told the Guardian that the incident would increase the value of the Rothko canvas.

"I don't want to spend a few months, even a few weeks, in jail." Mr. Umanets told ITV News. "But I do strongly believe in what I am doing, I have dedicated my life to this."

Mr. Umanets declined to comment to The Wall Street Journal.

A spokesman for the Metropolitan Police said authorities are looking for a suspect described as a white man in his 20s and have taken note of reports in the British media naming the alleged suspect.

Rothko, a Russian-American painter known for his abstract color fields, painted the murals in the late 1950s for the Four Seasons restaurant in New York's Seagram Building. The artist's decision to accept the commission was subversive, according to a Harper's Magazine piece by the late editor John Fischer, who famously recounted Rothko's hope that the art would "ruin the appetite of every son of a b— who ever eats in that room."

The paintings were never exhibited in the New York restaurant because Rothko decided to keep them. He gave a set of the now-famous murals to the Tate in 1969, just before he committed suicide.

The murals are an important part of Rothko's oeuvre because they mark the first time he created multiple paintings designed to surround the viewer, according to David Anfam, a Rothko expert and commissioning editor of fine art at British publisher Phaidon. Mr. Anfam says he thinks conservators will be able to repair the Tate's damaged canvas, which he says is likely worth tens of millions of dollars. In May, Rothko's 1961 painting "Orange Red Yellow" was sold at Christie's in New York for $86.9 million, becoming the most expensive Rothko work ever sold.

The Tate declined to comment on potential restoration.

"With the Seagram Murals, this was Rothko's first and seminal bid to create an entire environment—which is absolutely key—rather than just isolated individual works on canvas," Mr. Anfam said.

The incident Sunday served as a reminder of how vulnerable prized paintings can be when on display in high-traffic museums.

At the Tate on Sunday, two staffers who had been manning the room ran to summon security, but the vandal had left by time the guards arrived, Mr. Wright said. He said the museum soon evacuated the entire building, located across the Thames River from St. Paul's Cathedral.

The Tate confirmed in a statement that a visitor defaced one of Rothko's Seagram murals "by applying a small area of black paint with a brush to the painting." The museum declined to comment further.

Rothko's children, Kate Rothko Prizel and Christopher Rothko, also issued a statement, saying: "The Rothko family is greatly troubled by yesterday's occurrence but has full confidence that the Tate Gallery will do all in its power to remedy the situation."

The Rothko mural isn't the first work of art to be attacked in the name of art. In 2000, also at the Tate Modern, two performance artists urinated on Marcel Duchamp's sculpture "Fountain," itself a urinal. Four years earlier, Canadian artist Jubal Brown ate blue foods and purposefully vomited on a Piet Mondrian painting at the Museum of Modern Art in New York. A few months before, he had vomited in red hues on a different painting in Toronto.

-By Paul Sonne

Hirshhorn Museum and Sculpture Garden

Ai Weiwei will probably be regarded as the most important artist of the past decade. He is certainly its most newsworthy and arguably its most inspiring. Over the repressions of Chinese authorities, he has used a wide range of resources to broadcast a message of freedom.

Through his art, he has spoken with a voice that also includes those who have been silenced. A dissident under a capricious regime, he has endured trials that have captivated world attention while galvanizing an underground culture at home.

The arrival this week of Mr. Ai's first North American retrospective, "Ai Weiwei: According to What?"—which begins at the Hirshhorn Museum in Washington and travels to three other cities, concluding at the Brooklyn Museum in 2014—is itself newsworthy. That this exhibition largely fails to inspire not only speaks to Mr. Ai's own limitations but also to the challenges and missteps in exhibiting this increasingly multifaceted artist.

It bears remembering that following his youth in a Chinese labor camp and his punk bohemian immersion in 1980s New York, for several years Mr. Ai, now 55, was a member of Beijing's cultural elite. A sly thinker and adept designer, he emerged in the late 1990s along with the booming market for contemporary Chinese art to become a sanctioned and profitable ambassador of the modernized socialist state. In 2008, he even served as the artistic consultant on National Stadium, the "Bird's Nest" centerpiece of the Beijing summer Olympics.

It was the Sichuan earthquake in May of that year that turned Mr. Ai from cultural purveyor to iconoclast. He rightly believed that the tragedy of this event, a thousand miles from Beijing in the heart of rural China, was magnified by the state's refusal to investigate its particularly tragic circumstances: the death of more than 5,000 children due to shoddy school construction.

In the years that followed, Mr. Ai put this belief into action. He visited the devastation, documenting the sites in photos and videos, and organized what he called a "citizens' investigation" to identify and memorialize each child killed in this disaster.

As he pursued this project, Mr. Ai increasingly faced off with the Communist state. He came under surveillance and sustained a beating at the hands of local police, a life-threatening brain injury, the destruction of his studio in Shanghai, 81 days of imprisonment and psychological torture, a state-driven campaign of intimidation, multimillion-dollar charges and fines, and the stripping of his freedom to leave the country—including his plans to attend this North American retrospective.

The Hirshhorn show is an update of the one at Tokyo's Mori Art Museum in 2009, which was organized largely before Mr. Ai's dissident chapter. While the current exhibition brings in some important new pieces, it still feels weighted toward the state-sanctioned years. Even the recent selection largely follows the earlier formula.

Much of this work falls under what I call the Salon style of contemporary Chinese art: Oriental idioms, passed through Pop-art sensibilities, processed into large works with a factorylike finish. Mr. Ai can be particularly taken with Western art's historical references. Several examples here are minimalist-inspired sculptures with flourishes of Chinoiserie. "Cube in Ebony" (2009), carved with a traditional rusticated surface, recalls Tony Smith's "Die." "Moon Chest" (2008), created through traditional cabinet-making techniques, riffs off Donald Judd's "specific objects." "Cube Light" (2008), which is a recent acquisition by the Hirshhorn and also the most oversized, underwhelming piece in the show, is minimalism transformed into a kitschy chandelier.

Too much real estate gets taken up by these large works. The Mori's Mami Kataoka, who also curated this show, calls the art a "warm" minimalism for existing "between formalist and contextual methodologies"—in other words, Western work with an Eastern twist.

It is true that Mr. Ai includes personal, social and political references in his sculptures. At times they can seem like the coded messages of a prisoner tapping on his cell wall. "Surveillance Camera" (2010), a marble sculpture that turns an object of oppression into a work of art, is ominous and poignant. But often the sculpture, outsourced to inexpensive Chinese artisans, is a lot of effort for not much return. Sculptures that require lengthy explanations—that one was inspired by a small wooden box left by the artist's dissident poet father, Ai Qing, or that one was inspired by the shaking of the chandelier in Sergei Eisenstein's 1928 film "October"—are not so much "warm" as warmed over. One exception is "Straight" (2008-2012), a new floor installation made up of 38 tons of rebar recovered from Sichuan after the earthquake that is a rough and powerful work regardless of what else we know about it.

Mr. Ai has always been a conceptual artist. The challenge of a conventional museum exhibition is that his output has become more and more immaterial. It could be that Mr. Ai is now best reflected in other ways—for example in Alison Klayman's inspiring documentary "Ai Weiwei: Never Sorry." Blogging, Twitter and the Internet itself, to which Mr. Ai devotes eight hours a day, have become his genuine new media and his most consequential work. Unfortunately, this traditionally mounted show tells us little about that. Walls of photographs—with both wonderful snapshots from his New York years and thousands of digital images from his Internet feed—could offer extra context, but they are so poorly labeled and hung so high that they serve as little more than decoration.

For a retrospective, there is also regrettably little about his involvement in the Beijing avant-garde of the late 1970s—he was part of the "Stars" group during a brief thaw known as the "Beijing Spring." Nor are there examples of his underground books published in the mid-1990s.

A deep humanity runs through Mr. Ai's best work. "I've experienced dramatic changes in my living and working conditions over the past few years," he says in an interview with Hirshhorn curator Kerry Brougher reproduced in the exhibition catalog. But he resists being taken in by his own politics. "Maybe I'm just an undercover artist in the disguise of a dissident," he says. Believing in "freedom of speech, free expression, the value of life, and individual rights," he tempers his politics with empathy.

That's why his work on the "citizens' investigation" is so affecting and stands apart from the more ornamental aspects of this show. Alongside a wall-size spreadsheet listing all the child victims of the Sichuan quake, including their birthdays and schools, he presents a recording that reads off their names. In this stripped-down piece, we sense the full extent of the loss, a tragedy that is magnified for the victims' parents by China's one-child policy: "These people have cried a lifetime's worth of tears," says Mr. Ai. "In their hearts, they know that the precious lives they gave everything to protect are no longer." Beyond politics, the work strikes at the heart of death and remembrance. It also shows us how present this artist can be even in his absence—and just what is missing in so much else of this exhibition.

-By James Panero