Quote
"All Heaven and Earth are still, though not in sleep, But breathless, as we grow when feeling most."
"Tacere multis discitur vitæ malis."

Silence is the absence of ambient audible sound, the emission of sounds of such low intensity that they do not draw attention to themselves, or the state of having ceased to produce sounds; this latter sense can be extended to apply to the cessation or absence of any form of communication, whether through speech or other medium. Remaining mute can be a symptom of mental illness.
"All Heaven and Earth are still, though not in sleep, But breathless, as we grow when feeling most."
"Silence, according to western and eastern tradition alike, is necessary for the emergence of persons. It is taken from us by machines that ape people. We could easily be made increasingly dependent on machines for speaking and for thinking, as we are already dependent on machines for moving."
"In the end, we will remember not the words of our enemies but the silence of our friends."
"He who believes in Allah and the Last Day should either utter good words or better keep silence; and he who believes in Allah and the Last Day should treat his neighbour with kindness and he who believes in Allah and the Last Day should show hospitality to his guest."
"Weakness invites, but silence feasts oppression."
"Elected Silence, sing to me And beat upon my whorlèd ear, Pipe me to pastures still and be The music that I care to hear. Shape nothing, lips; be lovely-dumb: It is the shut, the curfew sent From there where all surrenders come Which only makes you eloquent."