Samuel Beckett once said that to restore silence is the role of objects. I don't know that he ever explained this, but maybe something in the mute object quiets us, and quieted we see more carefully.
Joseph Beuys said very simply: thought is represented by form. Fleeting memories, the stirrings of the unconscious, these are difficult to pinpoint though they leave residue as thought, and if one is marking a surface, perhaps as a kind of sign. Christian Carlson.