At fifteen my heart was set on learning;
At thirty I stood firm;
At forty I had no more doubts;
At fifty I knew the mandate of heaven;
At sixty my ear was obedient;
At seventy I could follow my heart's desire without transgressing the norm.
[Chinese: ???, transliterated Kong Fuzi or K'ung-fu-tzu, literally "Master Kong"] (traditionally 28 September 551 B.C. – 479 B.C.) Chinese social philosopher, whose teachings deeply influenced East Asian life and thought.