Analysis of problems connected with the perception of silence in John Cage's book "Silence" benefits from Cage's claim of the impossiblity to hear silence as well as from his insistance to articulate the perception of silence in a different way. Cage says that it impossible to hear silence if we understand it as an absence of sound and thus as an object of hearing.
The central focus of the article is to interpret the two reasons Cage seems to give in claiming this. First one is that the absence of sound doesn't exist.
The second reson is that even if the absence of sound would have existed, we couldn't hear it.