The Dada Manifesto is a foundational text for the Dada art movement, written by Tristan Tzara in 1918. It embodies the movement's anti-art philosophy, rejecting conventional aesthetics and embracing chaos, absurdity, and irrationality as a response to the horrors of World War I. The manifesto is pivotal in understanding Dada's challenge to established norms in art and culture, advocating for spontaneity and creativity without boundaries.