A classic is a book accepted as being exemplary or particularly noteworthy. What makes a book "classic" is a concern that has occurred to various authors ranging from Italo Calvino to Mark Twain and the related questions of "Why Read the Classics?" and "What Is a Classic?" have been essayed by authors from different genres and eras. The ability of a classic book to be reinterpreted, to seemingly be renewed in the interests of generations of readers succeeding its creation, is a theme that is seen in the writings of literary critics including Michael Dirda, Ezra Pound, and Sainte-Beuve. These books can be published as a collection or presented as a list, such as Harold Bloom's list of books that constitute the Western canon. Although the term is often associated with the Western canon, it can be applied to works of literature from all traditions, such as the Chinese classics or the Indian Vedas.

Great Books of the Western World is a series of books originally published in the United States in 1952, by Encyclopædia Britannica, Inc., to present the great books in 54 volumes.