‘I make real, physical forms, but they’re made out of color, which as a quality is at the outset abstract. I try to use color as if it were a material; I make a sculpture out of, say, “red”…So my interest in having a piece look not only conventionally physical, but also in the next moment having it look like it could be something imagines, almost a hallucination, is well served by using colour.’ John McCracken