War and Peace is a novel by the Russian author Leo Tolstoy, which is regarded as a central work of world literature and one of Tolstoy's finest literary achievements. Tolstoy said War and Peace is "not a novel, even less is it a poem, and still less a historical chronicle". Large sections, especially the later chapters, are a philosophical discussion rather than narrative.Tolstoy also said that the best Russian literature does not conform to standards and hence hesitated to call War and Peace a novel. Instead, he regarded Anna Karenina as his first true novel. According to the Encyclopædia Britannica, "no single English novel attains the universality of Leo Tolstoy's War and Peace."