information:classification
Leaving "retinal art" behind

At about this time, Duchamp read Max Stirner 's philosophical tract, The Ego and Its Own, the study which he considered another turning point in his artistic and intellectual development. He called it "a remarkable book... which advances no formal theories, but just keeps saying that the ego is always there in everything."

While in Munich in 1912, he painted the last of his Cubist-like paintings. He started The Bride Stripped Bare by Her Bachelors, Even image, and began making plans for The Large Glass – scribbling short notes to himself, sometimes with hurried sketches. It would be more than ten years before this piece was completed. Not much else is known about the two-month stay in Munich except that the friend he visited was intent on showing him the sights and the nightlife, and that he was influenced by the works of the sixteenth century German painter Lucas Cranach the Elder in Munich's famed Alte Pinakothek, known for its Old Master paintings. Duchamp recalled that he took the short walk to visit this museum daily. Duchamp scholars have long recognized in Cranach the subdued ochre and brown color range Duchamp later employed.

The same year, Duchamp also attended a performance of a stage adaptation of Raymond Roussel 's 1910 novel, Impressions d'Afrique, which featured plots that turned in on themselves, word play, surrealistic sets and humanoid machines. He credited the drama with having radically changed his approach to art, and having inspired him to begin the creation of his The Bride Stripped Bare By Her Bachelors, Even, also known as The Large Glass. Work on The Large Glass continued into 1913, with his invention of inventing a repertoire of forms. He made notes, sketches and painted studies, and even drew some of his ideas on the wall of his apartment.

Toward the end of 1912, he traveled with Picabia, Apollinaire and Gabrielle Buffet-Picabia through the Jura mountains, an adventure that Buffet-Picabia described as one of their "forays of demoralization, which were also forays of witticism and clownery... the disintegration of the concept of art". Duchamp's notes from the trip avoid logic and sense, and have a surrealistic, mythical connotation.

Duchamp painted few canvases after 1912, and in those he did, he attempted to remove " painterly " effects, and to use a technical drawing approach instead.

His broad interests led him to an exhibition of aviation technology during this period, after which Duchamp said to his friend Constantin Brâncuși, "Painting is washed up. Who will ever do anything better than that propeller? Tell me, can you do that?". Brâncuși later sculpted bird forms. U.S. Customs officials mistook them for aviation parts and attempted to collect import duties on them.

In 1913, Duchamp withdrew from painting circles and began working as a librarian in the Bibliothèque Sainte-Geneviève to be able to earn a living wage while concentrating on scholarly realms and working on his Large Glass. He studied math and physics – areas where exciting new discoveries were taking place. The theoretical writings of Henri Poincaré particularly intrigued and inspired Duchamp. Poincaré postulated that the laws believed to govern matter were created solely by the minds that "understood" them and that no theory could be considered "true". "The things themselves are not what science can reach..., but only the relations between things. Outside of these relations there is no knowable reality", Poincaré wrote in 1902. Reflecting the influence of Poincaré's writings, Duchamp tolerated any interpretation of his art by regarding it as the creation of the person who formulated it, not as truth.

Duchamp's own art-science experiments began during his tenure at the library. To make one of his favorite pieces, 3 Standard Stoppages (3 stoppages étalon), he dropped three 1-meter lengths of thread onto prepared canvases, one at a time, from a height of 1 meter. The threads landed in three random undulating positions. He varnished them into place on the blue-black canvas strips and attached them to glass. He then cut three wood slats into the shapes of the curved strings, and put all the pieces into a croquet box. Three small leather signs with the title printed in gold were glued to the "stoppage" backgrounds. The piece appears to literally follow Poincaré's School of the Thread, part of a book on classical mechanics.

In his studio he mounted a bicycle wheel upside down onto a stool, spinning it occasionally just to watch it. Although it is often assumed that the Bicycle Wheel represents the first of Duchamp's "Readymades", this particular installation was never submitted for any art exhibition, and it was eventually lost. However, initially, the wheel was simply placed in the studio to create atmosphere: "I enjoyed looking at it just as I enjoy looking at the flames dancing in a fireplace."

After World War I started in August 1914, with his brothers and many friends in military service and himself exempted (due to a heart murmur), Duchamp felt uncomfortable in Paris. Meanwhile, Nude Descending a Staircase No. 2 had scandalized Americans at the Armory Show, and helped secure the sale of all four of his paintings in the exhibition. Thus, being able to finance the trip, Duchamp decided to emigrate to the United States in 1915. To his surprise, he found he was a celebrity when he arrived in New York in 1915, where he quickly befriended art patron Katherine Dreier and artist Man Ray. Duchamp's circle included art patrons Louise and Walter Conrad Arensberg, actress and artist Beatrice Wood and Francis Picabia, as well as other avant-garde figures. Though he spoke little English, in the course of supporting himself by giving French lessons, and through some library work, he quickly learned the language. Duchamp became part of an artist colony in Ridgefield, New Jersey, across the Hudson River from New York City.

For two years the Arensbergs, who would remain his friends and patrons for 42 years, were the landlords of his studio. In lieu of rent, they agreed that his payment would be The Large Glass. An art gallery offered Duchamp $10,000 per year in exchange for all of his yearly production, but he declined the offer, preferring to continue his work on The Large Glass.