1. Confucius said: "Isn't it right to learn and practice it over time? Isn't it a joy to have friends come from afar? If a person doesn't know and is not stunned, isn't he a gentleman?" "Xue Er"

Translation: Confucius said: "Isn't it also very pleasant to learn it and then review it at a certain time? Isn't it also happy to have like-minded people coming from afar? People don't understand me, and I But he is not resentful, isn’t he a morally cultivated person? ”

2. Zengzi said: “I have to examine myself three times: Have I been unfaithful in my dealings with others? Have I not believed in my friends?” "Xue Er"

Translation: Zeng Zi said: "I reflect on myself many times every day: Have I done my best in doing things for others? Have I been honest in my interactions with my friends?" Have you reviewed it? ”

3. The Master said: “When I was fifteen, I was determined to learn; And follow your heart's desires without going beyond the rules. ""Wei Zheng"

Translation: Confucius said: "I determined to study at the age of fifteen, established myself in society at the age of thirty, mastered the knowledge without being confused at the age of fifty. At the age of sixty, one understands and conforms to the laws of nature. At sixty, one can distinguish right from wrong when hearing what others say. At seventy, one can do as he pleases without breaking the rules. You can be a teacher. ""Wei Zheng"

Translation: Confucius said: "After reviewing old knowledge, you can have new understandings and new discoveries. Such people can be teachers."

5. Confucius said: "Learning without thinking will lead to ignorance; thinking without learning will lead to peril.

" "Wei Zheng"

Translation: Confucius said: "Just reading without thinking will lead to confusion and confusion; just dreaming without reading will be harmful.