孔子曰:“吾十有五而志于学,三十而立,四十而不惑,五十而知天命,六十而耳顺,七十而从心所欲,不逾矩。”由是,十五岁、三十岁、四十岁、五十岁、六十岁、七十岁便分别获得了志学、而立、不惑、天命(或知天命)、耳顺、从心(或不逾矩)的异名。这后者既是对前者的代称,成了名词,也就不具形容词的性质,故而后者只可用于代称前者,而决不可用以修饰前者。试看下例: Confucius said: “I have ten and five are devoted to learning, thirty will stand, forty will not be confused, fifty will know the destiny, sixty, and obedient, seventy and do whatever they like, not exceeding the moment.” "Yes, fifteen At the age of thirty, forty, fifty, sixty, seventy years old, they acquired the distinctions of lofty ideals, standing, ingenuity, destiny (or knowing the destiny), obedience, and heart (or not overstepping). name. This latter is both a surrogate for the former and has become a noun, so it is not adjective in nature. Therefore, the latter can only be used to represent the former and must not be used to modify the former. Take a look at the following example: