The Talmud comments, that a charity box containing just a single coin, makes lots of noise; while a full charity box, hardly makes any noise.
Those who "make noise," who always talk, are usually the ones with very little in the "box," with little wisdom.
Those with a full "box," with abundant wisdom and knowledge, make little noise; they prefer remaining silent and listening, to increase their knowledge.
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Therefore, they spend more time silently listening, rather than speaking.
