原文
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。”
英译
Confucius said, "At the age of fifteen, I made up my mind to devote myself into education causes. Thirty, I gained myself a foothold in my life. Forty, I got rid of all ignorance. Fifty, I came to understand the matter of providence. Sixty, I became open in giving audience to ideas. Seventy, I became able to act at my full inclinations and never got way out of line."