Marcel Duchamp, who did to representation what Friedrich Nietzsche did to religion, used the ready-made to "present", not to "represent". Johns and Rauschenberg, etc., are the "counter-reformers" who collaged real objects into the representational space of their paintings.

Osvaldo Romberg: Art to Art. Life to Life.
Faith, Ridgefield: Aldrich Museum of Contemporary Art, 1999.