Kǒngzǐ shuō liùshí'ér'ěrshùn, qīshí ér cóng xīn suǒ yù.
Confucius said 'at sixty my ear was attuned; at seventy I could follow my heart's desires.'
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history
From 《论语·为政》 - Confucius's autobiographical milestones: 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. Each age gave Chinese a stock name: 而立之年 (30), 不惑之年 (40), 知命之年 (50), 耳顺之年 (60).
usage
耳顺 literally 'the ear is compliant' - meaning one no longer reacts defensively to contrary opinions. 耳顺之年 is the standard poetic term for age 60 in modern obituaries and birthday speeches.