Let us consider two important factors, the two poles of the creation of art: the artist on one hand, and on the other the spectator who later becomes the posterity; to all appearances the artist acts like a mediumistic being who, from the labyrinth beyond time and space, seeks his way out to a clearing.
'The Creative Act', 1957, Duchamp’s lecture in Houston, April 1957, in Art News, 56. no. 4, Summer 1957, p. 28 –29
I wanted to kill art for myself… …a new thought for that object.Marcel Duchamp
The spectator experiences the phenomenon of transmutation; through the change from inert matter into a work of art, an actual transubstantiation has taken place... All in all, the creative act is not performed by the artist alone; the spectator brings the work into contact with the external world by deciphering and interpreting its inner qualifications and thus adds his contribution to the creative act.Marcel Duchamp