Fyodor Sologub (Russian: ????? ??????´?, born Fyodor Kuzmich Teternikov, Russian: ????? ??????´? ????´??????, also known as Theodor Sologub; 1 March [O.S.
17 February] 1863 – 5 December 1927) was a Russian Symbolist poet, novelist, playwright and essayist.
He was the first writer to introduce the morbid, pessimistic elements characteristic of European fin de siècle literature and philosophy into Russian prose.