Born in Moscow in 1821, Dostoyevsky was introduced to literature at an early age through fairy tales and legends, and through books by Russian and foreign authors. His mother died in 1837 when he was 15, and around the same time, he left school to enter the Nikolayev Military Engineering Institute. After graduating, he worked as an engineer and briefly enjoyed a lavish lifestyle, translating books to earn extra money. In the mid-1840s he wrote his first novel, Poor Folk, which gained him entry into St. Petersburg's literary circles. Arrested in 1849 for belonging to a literary group that discussed banned books critical of "Tsarist Russia," he was sentenced to death but the sentence was commuted at the last moment. He spent four years in a Siberian prison camp, followed by six years of compulsory military service in exile.