Silence

“Well-timed silence hath more eloquence than speech.”
Martin Fraquhar Tupper

"There is not only an art, but an eloquence in it." 
Marcus Tullius Cicero 

“Silence is argument carried out by other means.”
Ernesto ‘Che’ Guevara

“If a word is worth a coin, silence is worth two.”
Hebrew Proverb 

“The ideal man is his own best friend and takes delight in privacy.”
Aristotle 

“A quiet mind cureth all.”
Robert Burton 

“I think the first virtue is to restrain the tongue: he approaches nearest to the Gods, who knows how to be silent, even though he is in the right.”
Cato 

“In silence man can most readily preserve his integrity.” 
Meister Eckhart 

“He that would live in peace and at ease, must not speak all he knows, nor judge all he sees.”
Benjamin Franklin