Confucius said: it's a pleasure to learn from time to time; Confucius said: the knower is not as good as the knower, and the good is not as good as the enjoyment; What you get on paper is so shallow that you never know what you want to do. Stones from other mountains can attack jade; Be knowledgeable, interrogate, think carefully, distinguish clearly and persist.

There are many more, but the limit is 100 words, which can only be deleted and then deleted.