Enrico Baj was an Italian artist and writer on art. Many of his works show an obsession with nuclear war. He created prints, sculptures but especially collage. He was close to the surrealist and dada movements, and was later associated with CoBrA. As an author he has been described as a leading promoter of the avant-garde. He worked with Umberto Eco among other collaborators. He had a long interest in the pseudo-philosophy 'pataphysics.