(…) Then no figures, the perceptual terms are rejected thus, and marked by this rejection as not-figure and not-ground. But in being canceled
they are also preserved. And the logic of that preservation is made transparent by the graph. The graph’s circumference holds all its terms in
mutual opposition: figure versus ground; ground versus not-ground; not-ground versus not-figure; not-figure versus figure. Its diagonal axes yield,
however, to mirror relations, or rather to mirror restatements (the structuralists’ inverse-of-the opposite, their double negatives), with
figure, in this case, being the “same” is not-ground.

Rosalind Krauss, The optical unconscious, 1993