The Master said, "At fifteen, I had my mind bent on learning。
"At thirty, I stood firm。
"At forty, I had no doubts。
"At fifty, I knew the decrees of Heaven。
"At sixty, my ear was an obedient organ for the reception of truth。
"At seventy, I could follow what my heart desired, without transgressing what was right。 "
网上找的,供参考。