Not blindness itself, but blindness as a symptom for an inner seeing and as a counterforce against a one-sided fixation on beauty and taste were the reasons why Marcel Duchamp from 1916 onwards was occupied with the theme of blindness. Two volumes of The Blind Man were displayed in 1917 on the exhibition of the Society of Independent Artists in New York. The second volume contained comments about the fact that Duchamp’s contribution of a Fountain, his now so famous ready-made Urinoir, signed “R. Mutt”, was rejected by the apparently jury-less committee. This means that the theme of blindness was expressed twice: no one could see the work and so his theoretical opposition against beauty and taste could not be illustrated by the Urinoir eithe...