A strange sort of tension filled the two rooms occupied by Iran do Espírito Santo’s solo show; like the calm before a storm, it seemed to be generated by pent-up energy before its release. At the core of the Brazilian artist’s work is an interest in what he describes as “the duality we live in; between the concrete world and that of ideas. It’s an existential human condition; the artworks are a way of negotiating this, a need to deal with immateriality.” Espírito Santo, who has exhibited consistently since the mid-1980s, has established an aesthetic that reflects his conceptual concerns by means