Confucius said: I am determined to learn five out of ten, stand at thirty, be puzzled at forty, know my destiny at fifty, be obedient at sixty, and wish at seventy.

Confucius said: when I was fifteen, I was determined to study; At the age of thirty, I can stand in the world; Forty years old can avoid confusion; At the age of fifty, I have been able to understand fate; At the age of sixty, you can obey your fate; By the age of seventy, I can finally do whatever I want, and everything I do conforms to the rules.