Editing Daniel-Henry Kahnweiler (section)

==World War I and World War II==
[[File:Juan Gris Daniel-Henry Kahnweiler 1921.jpg|thumb|right|Pencil drawing of Kahnweiler by [[Juan Gris]], 1921, [[Musée National d'Art Moderne]], Paris]]
The outbreak of World War I in 1914 not only ruptured the Cubist experiments in art, but also forced Kahnweiler to live in exile in Switzerland; due to his German citizenship, he was considered an [[Alien (law)|alien]] under French law. Many German nationals living in France had their possessions sequestered by the French state, and as a result, Kahnweiler's collection was confiscated in 1914 and sold by the government in a series of auctions at the [[Hôtel Drouot]] between 1921 and 1923.<ref>Malcolm Gee, Dealers, Critics and Collectors of Modern Painting; Aspects of the Parisian Art Market Between 1910 and 1930, Courtauld PhD Dissertation 1977, p. 25</ref><ref>[http://libmma.contentdm.oclc.org/cdm/ref/collection/p15324coll18/id/45980 Kahnweiler collection: Catalogue des tableaux, aquarelles, gouaches et dessins. Part II,  Hôtel Drouot, Paris, November 17-18, 1921]</ref>

Among these was [[Pablo Picasso]]'s "Buffalo Bill," which Kahnweiler acquired from Picasso in 1912 and was auctioned at Hôtel Drouot in the "Fourth Sale of Sequestered Art," May 7-8, 1923, and bought in auction at [[Christie's]] for $12,412,500 on Nov. 17, 2022.<ref>https://www.christies.com/en/lot/lot-6397621 {{Bare URL inline|date=August 2024}}</ref>

During the years of exile (until 1920), Kahnweiler studied and wrote works such as the ''Der Weg zum Kubismus'' and ''Confessions esthétiques''. Writing becoming a passion he continued over his lifetime, and he authored hundreds of books and major articles. The second period of enforced writing came during a period of internal exile caused by the events of World War II.  As a Jew, the [[Nazi]]s forced him to flee Paris. He remained in France, in hiding. "Under the clouds from the [[gas chamber]]s," as he put it in his seminal work on [[Juan Gris]].