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Dmitry Merezhkovsky, the husband of Zinaida Gippius, was a prominent Russian poet, novelist, and religious philosopher. He is best known for his trilogy of novels, "The Kingdom of the Antichrist," which explores spiritual and political themes in a dystopian future. Merezhkovsky was also a prominent figure in the Russian Symbolist movement, known for his poetic and philosophical explorations of religious and metaphysical themes.