Theory of sound

Well, he seems like a nice poetic bloke, making evverything seem meaningful! but he had a point about silence, I've never really thought about it before. But is silence silence without a rustle of a distant sound? to be honest i lost my train of thought for about 10 minutes while i was reading it cos i really didnt know whther i had ever truly heard silence, especially after i had tried to find silence so hard yesterday. Can silence be expplained as hearing nothing~? well if so then there is or has ever been silence... there is always some sort of sound to be heard. Maybe ill do that sometime in my life... search for silence! He talks of the importance of sound in the film and theatre induustry and how sound can be changed according to both the space and the space intended to be seen. the guy talks some knowledge and it was interesting! POETIC!!!!