Speech is human, silence is divine, yet also brutish and dead: therefore we must learn both arts.
Thomas Carlyle
To keep silent when you can say something wise and useful is as bad as keeping on propagating foolish and unwise thoughts.
Ali bin Abu-Talib
When we want to talk, we can instead listen, and let our attentiveness to another's need to speak be our silent statement.
Bryant McGill
When our two souls stand up erect and strong, Face to face, silent, drawing nigh and nigher, Until the lengthening wings break into fire At either curvd point, what bitter wrong Can the earth do to us, that we should not long Be here contented?
Elizabeth Barrett Browning