the total lack of audible sound

it took google.com 0.16 seconds to return 78,600,000 hits for the word silence.  that is a lot of information about a topic that cannot be heard. 

i was in a situation today that screamed for silence.  and i screamed back . . . in silence. 

those were the most powerful words i have never spoken.

master your mouth and you master a lot more than you master with words.