Around the age of seventy, Hilma af Klint began to separate the documents and artworks she would preserve from those she would destroy. In this she was no different from many artists, but in other ways she was, and she knew it. Af Klint was not just an artist. She was also a mystic who said that her most powerful, abstract works were painted under the direction of higher spirits communicating from the astral plane. Since the late nineteenth century, an array of spiritualist teachings had been revolutionizing religious understanding the world over. For example, Theosophy, among the most popular, sought to reconcile the spirit with the natural and scientific worlds, and many artists embraced it: Kandinsky, Mondrian, Kupka, and Arthur Dove all studied Theosophy; none of them, however, ever publicly suggested their canvases were the expressions of any consciousness other than their own. Realizing the world was not yet ready for what she had created and what motivated it, in 1932 af Klint wrote that none of her paintings or drawings should be shown until twenty years after her death.
Thus she catapulted her life’s work into the future, out of the first half of the twentieth century into the second, safe from the judgment of her contemporaries. They were not to have the last word.

Who was this woman who sent her work to the future in a time capsule, putting her faith in generations to come? When she died, af Klint left behind more than 26,000 pages of text and 1,300 paintings, a formidable legacy. One can see from this material how, over and over again, she broke every rule society set for her—as an art student at the Royal Academy in Stockholm, as a woman at the turn of the twentieth century, and as a modern artist. It is widely accepted now that well before painters like Wassily Kandinsky or Kazimir Malevich claimed to have invented abstraction, she had been painting in that mode for several years—first in small formats and then on an enormous scale. When she began to paint this way, she was forty-four years old. It was November 1906. “The experiments I have undertaken,” she wrote as she set off on this new path, “will astound humanity.”

Any memory of these works faded after she died, and it took decades to bring them back to light. Why so long? The fact is that profound changes in the fine arts often meet with vehement rejec­tion, and the resistance to af Klint’s reappraisal was evident the first time her work was presented to a wide audience. In 1986, more than forty years after her death, the Los Angeles County Museum of Art organized an exhibition titled The Spiritual in Art: Abstract Painting, 1890–1985, which offered a new perspective on the his­tory of nonrepresentational art. In the catalogue and exhibition, a relationship was suggested between abstraction and the various spiritual movements that spread through the Western world around the turn of the twentieth century. It was a major show, and landmark works of abstraction were loaned by museums in Munich, Paris, Moscow, and New York.
Af Klint’s paintings came crashing into this venerable canon like a meteor. Suddenly her huge canvases were hanging next to those of recognized modernist masters. The unknown Swedish woman seemed to come out of nowhere, and the reception was largely nega­tive. The American critic Hilton Kramer wrote: “Hilma af Klint’s paintings are essentially colored diagrams. To accord them a place of honor alongside the work of Kandinsky, Mondrian, Malevich, and Kupka . . . is absurd. Af Klint is simply not an artist in their class and—dare one say it?—would never have been given this inflated treatment if she had not been a woman.” Kramer wasn’t the only person who thought so. Silence fell again on the subject of Hilma af Klint.

It took two more decades before the Moderna Museet in Stock­holm mounted a large-scale offensive meant to secure a place for af Klint in the modernist canon. In 2013 the institution sponsored Pioneer of Abstraction, the largest exhibition of her work to that point, and sent the show on tour through Europe. Excitement began to gather around the artist, and yet again the paintings met with resistance. The objections were phrased more carefully this time, but they came from prominent quarters. Curator Leah Dickerman of the Museum of Modern Art in New York wrote: “[Af Klint] painted in isolation and did not exhibit her works, nor did she participate in public discussions of that time. I find what she did absolutely fascinating, but am not even sure she saw her paintings as art works.” It took a third try for the story to take a new turn. The 2018 show at the Solomon R. Guggenheim Museum in New York, Hilma af Klint: Paintings for the Future, broke all attendance records, attracting more than 600,000 visitors—more than any exhibition since the museum’s founding. The catalogue became a best seller. The New York Times ran a piece called “Hilma Who? No More!” Since October 2019, the Guggenheim has continued to show several of her paintings. The art history outsider has become a star.