《论语·尧曰篇》
孔子说： 不懂得天命，就不能做君子；不知道礼仪，就不能立身处世；不善于分辨别人的话语，就不能真正了解他。 
孔子曰： 不知命，无以为君子也；不知礼，无以立也；不知言，无以知人也。 
Confucius said: “Without knowing the Mandate of Heaven, one cannot become a junzi. Without knowing ritual and propriety, one cannot establish oneself in the world. Without being able to distinguish the words of others, one cannot truly understand others.”