“Manifesto: A term closely associated with the Avant-Garde Modernists and used primarily during the 20th century. Often the work of writers rather than artists, manifestos were published to proclaim new or revolutionary movements that spanned the arts, as in the Futurist and Surrealist manifestos.”
Excerpted from: Diamond, David G. The Bulfinch Pocket Dictionary of Art Terms. Boston: Little Brown, 1992.