many religious references. Centuries-Old Mead was placed in stasis by the censorship bureau and never made it to press. She also feared that The Vine would have trouble with the censors because of its references to God. She had learned from previous experience that religious references were problematic. By fall, she was ill, suffering from both bronchitis and stomach problems caused by her Graves' disease. Erarskaya was also sick, having contracted tuberculosis. In the beginning of 1923, Parnok embarked on a friendship with Olga Nikolaevna Tsuberbiller, a mathematician at Moscow State University. The exact nature of her relationship with Tsuberbiller is unknown as, while she occupied a significant place in the poet's life, Parnok did not describe Tsuberbiller in the same sexual context as her lovers. Instead, Tsuberbiller was a protector. Parnock would later describe her as almost a guardian angel in her collection of poems Half-Whispered. She joined the group known as the "Lyrical Circle", which included members like Lev Gornung, , Vladislav Khodasevich, and Vladimir Lidin. The members critiqued each other's work, which she hoped would help her find clarity and harmony in her works. Short of money, Parnok briefly took an office position, but soon quit and depended upon freelance translations and literary critiques to pay her bills, though critiques were beginning to be censored as well. By 1925, Parnok and Tsuberbiller had become the closest of friends, and when Erarskaya was hospitalized for a mental break, Tsuberbiller was the one to whom she turned to regain her peace of mind. Parnok was distressed, feeling that her life had ended, and was unable to work because of her depression and worry over her lover. Erarskaya's paranoia and violent outbursts, led to unsettling trauma for Parnok, causing several fainting spells. In 1926, Parnok moved in with Tsuberbiller on Neopalimovsky Lane at Smolensky Boulevard. After a year in the sanatorium Erarskaya was finally pronounced well and released. Increasingly Parnok felt isolated from her readers and alienated from her peers, in part because by 1926, GLAVLIT's authority had been extended to cover both public and private publishing. Parnok feared that her cycle Music would not be accepted for publication. The censorship of her works, but also the unspoken censorship of herself, made her feel invisible, inspiring her poems such as Prologue (1928). She joined another group of poets, known as "The Knot" which was founded to publish the works of