Mikhail Bulgakov spouse Yelena Bulgakova
After travelling through the Caucasus, Bulgakov headed for Moscow, intending "to remain here forever". It was difficult to find work in the capital, but he was appointed secretary to the literary section of Glavpolitprosvet (Central Committee of the Republic for Political Education). In September 1921, Bulgakov and his wife settled near Patriarch's Ponds, on Bolshaya Sadovaya street, 10 (now close to Mayakovskaya metro station). To make a living, he started working as a correspondent and feuilletons writer for the newspapers Gudok, Krasnaia Panorama and Nakanune, based in Berlin. For the almanac Nedra, he wrote  Diaboliad, The Fatal Eggs (1924), and Heart of a Dog (1925), works that combined bitter satire and elements of science fiction and were concerned with the fate of a scientist and the misuse of his discovery. The most significant features of Bulgakov's satire, such as a skillful blending of fantastic and realistic elements, grotesque situations, and a concern with important ethical issues, had already taken shape; these features were developed further in his most famous novel.Between 1922 and 1926, Bulgakov wrote several plays (including Zoyka's Apartment), none of which were allowed production at the time. The Run, treating the horrors of a fratricidal war, was personally banned by Joseph Stalin after the Glavrepertkom (Department of Repertoire) decided that it "glorified emigration and White generals". In 1924, Bulgakov divorced his first wife and the next year married Lyubov Belozerskaya.
When one of Moscow's theatre directors severely criticised Bulgakov, Stalin personally protected him, saying that a writer of Bulgakov's quality was above "party words" like "left" and "right". Stalin found work for the playwright at a small Moscow theatre, and next the Moscow Art Theatre (MAT). Bulgakov's first major work was the novel The White Guard (Belaya gvardiya [Белая гвардия]), serialized in 1925 but never published in book form. 
On 5 October 1926, The Days of the Turbins, the play which continued the theme of The White Guard (the fate of Russian intellectuals and officers of the Tsarist Army caught up in revolution and Civil war) was premiered at the MAT. Stalin liked it very much and reportedly saw it at least 15 times.His plays Ivan Vasilievich (Иван Васильевич), Don Quixote (Дон Кихот) and Last Days (Последние дни [Poslednie Dni], also called Pushkin) were banned. The premier of another, Moliėre (also known as The Cabal of Hypocrites), about the French dramatist in which Bulgakov plunged "into fairy Paris of the XVII century", received bad reviews in Pravda and the play was withdrawn from the theater repertoire. In 1928, Zoyka's Apartment and The Purple Island were staged in Moscow; both comedies were accepted by the public with great enthusiasm, but critics again gave them bad reviews. By March 1929, Bulgakov's career was ruined when  Government censorship stopped the publication of any of his work and his plays.In despair, Bulgakov first wrote a personal letter to Joseph Stalin (July 1929), then on 28 March 1930, a letter to the Soviet government. He requested permission to emigrate if the Soviet Union could not find use for him as a writer. In his autobiography, Bulgakov claimed to have written to Stalin out of desperation and mental anguish, never intending to post the letter. He received a phone call directly from the Soviet leader, who asked the writer whether he really desired to leave the Soviet Union. Bulgakov replied that a Russian writer cannot live outside of his homeland. Stalin gave him permission to continue working at the Art Theater; on 10 May 1930, he re-joined the theater, as stage director's assistant. Later he adapted Gogol's Dead Souls for stage.In 1932, Bulgakov married for the third time, to Yelena Shilovskaya, who would prove to be inspiration for the character Margarita in his most famous novel, on which he started working in 1928.  During the last decade of his life, Bulgakov continued to work on The Master and Margarita, wrote plays, critical works, and stories and made several translations and dramatisations of novels. Many of them were not published, others were "torn to pieces" by critics. Much of his work (ridiculing the Soviet system) stayed in his desk drawer for several decades. The refusal of the authorities to let him work in the theatre and his desire to see his family who were living abroad, whom he had not seen for many years, led him to seek drastic measures. Despite his new work, the projects he worked on at the theatre were often prohibited, and he was stressed and unhappy.
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