Defienda su talento (Defend your talent), 1974
“He gave this act the status of artwork a year later and called it Defienda su talento [Defend your talent] (1974). He configured it as a wall drawing and a series of posters that had only the figure of a hand (the one he used to give the slap) and the title of the work. Returning to the exhibition, the opening consisted of an invitation for the visitors to help him dismantle the exhibition: erase the drawings and paint back the walls so that the gallery would be ready for the next show. People would ask him: Why are you doing an exhibition where nothing is for sale? "Because this is an exhibition for showing, not for buying!" —the artist and the gallerist replied.”."
laescuela.art/en/campus/library/essays