These days conceptual art is an institutional and in general rigid art. But it must not be forgotten that back in the 1970s, especially in the Spain that was still steep in the process of shedding the shackles of decades of Francoism, it was pure transgression. Serving as a reminder of this is an exhibition on show at the Reina Sofía National Museum and Art Center in Madrid through 18 May, devoted to Ignacio Gómez de Liaño, master of heterodoxy in literature, philosophy, and art.