Robert Morris (1931-2018) was one of the most influential figures in postwar American art. His extraordinarily versatile practice encompassed dance performance, minimalist sculpture, earthworks, drawing, painting, film, photography, collage, readymades and theoretical essays. Primarily based in New York City, the artist explored in his oeuvre the perception of objects, and how viewers renegotiate their sense of space when confronted by one of his works. Throughout his long career, he…