" Lord Chesterfield advises his son “to speak often, but not to speak much at a time; so that if he does not please, he will not at least displease to any great extent.”
Rousseau tells us, that, “persons who know little, talk a great deal, while those who know a great deal say very little. "

― , Martine's Hand-Book of Etiquette, and Guide to True Politeness