A truly eloquent or wise person does not need to speak much; their profound understanding is often conveyed through fewer words or even silence.
他虽然平时不爱多言，但关键时刻一针见血，真正做到了大辩不言
Although he usually doesn't like to talk much, at critical moments he hits the nail on the head, truly embodying the principle that a truly eloquent person doesn't speak much.
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