What is the good of being ready with the tongue? They who encounter men with smartnesses of speech for the most part procure themselves hatred. I know not whether he be truly virtuous, but why should he show readiness of the tongue?

2.17 The Master said, “You [Zilu], do you know what I have been trying to teach you? To say that you know something when you know it and to say that you do not know something when you do not know it-this is true knowing [zhi].

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