Fyodor Mikhaylovich Dostoyevsky (1821-1881) was a Russian writer and essayist, known for his novels Crime and Punishment, The Idiot and The Brothers Karamazov. Dostoyevsky's literary output explores human psychology in the troubled political, social and spiritual context of 19th-century Russian society. Considered by many as a founder or precursor of 20th-century existentialism, his Notes from Underground (1864), written in the embittered voice of the anonymous "underground man", was called by Walter Kaufmann the "best overture for existentialism ever written." A prominent figure in world literature, Dostoyevsky is often acknowledged by critics as one of the greatest psychologists in world literature.