Tikhon of Zadonsk was an 18th-century Russian Orthodox bishop and spiritual writer whom the Eastern Orthodox Church glorified (canonized) as a saint in 1861.

Demons is a novel by Fyodor Dostoevsky, first published in the journal The Russian Messenger in 1871–72. It is considered one of the four masterworks written by Dostoevsky after his return from Siberian exile, along with Crime and Punishment (1866), The Idiot (1869), and The Brothers Karamazov (1880). Demons is a social and political satire, a psychological drama, and large-scale tragedy. Joyce Carol Oates has described it as "Dostoevsky's most confused and violent novel, and his most satisfactorily 'tragic' work." According to Ronald Hingley, it is Dostoevsky's "greatest onslaught on Nihilism", and "one of humanity's most impressive achievements—perhaps even its supreme achievement—in the art of prose fiction."