just to cite a few quotes about why some people opt to keep mum about what's going on around...enjoy!
Silence is the ultimate weapon of power.
(Charles de Gaulle)
In the end, we will remember not the words of our enemies, but the silence of our friends.
(Martin Luther King)
Silence is a source of true strength. (Lao Tzu)
The true genius shudders at incompleteness - and usually prefers silence to saying something which is not everything it should be.
(Edgar Allan Poe)
Silence is the sleep that nourishes wisdom.
(Francis Bacon)
He who does not understand your silence will probably not understand your words.
(Elbert Hubbard)
Silence is only frightening to people who are compulsively verbalizing.
(William S. Burroughs)