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Russian author Andrei Bely, born Boris Nikolaevich Bugaev, is considered one of the most significant figures of Russian Symbolism. Bely's literary works, including novels, poetry, and essays, are known for their experimental style and exploration of philosophical and spiritual themes. His most famous novel, "Petersburg," is a complex and multi-layered work that delves into the political and social turmoil of pre-revolutionary Russia.