Perhaps there is a kind of speech different to that which adds noise to the world. That subtracts silence from that noise, as you would draw with your finger on a condensated window.
To speak by subtraction – to let silence sound and speak thereby … is there a kind of writing that unwrites the written? A white writing, a writing blanched; or is it the other way round: a black page slipped beneath black ink?
— Spurious
Notes from a Room 