céng曾zǐ子yuē曰:wú吾rì日sān三shěng省wú吾shēn身——wèi为rén人móu谋ér而bù不zhōng忠hū乎?yǔ与péng朋yǒu友jiāo交ér而bú不xìn信hū乎?chuán传bù不xí习hū乎?