In 1920, Berdiaev became professor of philosophy at the University of Moscow, but he had no academic credentials.
Novelist Aleksandr Solzhenitsyn in his book The Gulag Archipelago (published in 1973) recounts the incident as follows: [Berdyaev] was arrested twice; he was taken in 1922 for a midnight interrogation with Dzerjinsky; Kamenev was also there...