◇ The Tao cannot be separated for a moment, but it is not the Tao. Therefore, a gentleman should be cautious about what he does not see and be afraid of what he does not hear. Don't see what is hidden, don't show what is subtle, so a gentleman should be careful about what he is alone." - "Book of Rites· Doctrine of the Mean"

◇ The so-called person who is sincere in his intentions should not deceive himself. Just like a bad odor, such as Being fond of lust is called being self-effacing. A villain must be cautious about being alone. When he sees a gentleman, he becomes disgusted and hides his bad deeds. What's the benefit? This means that sincerity is in the middle and appearance is in the outer. Therefore, a gentleman must be careful about his independence. ——"Book of Rites·University" ; When a boat is on a river or sea, it does not float because of the lack of a ride on it; when a gentleman does what is right, he does not stop because of ignorance. This is the case, no matter how subtle or hidden it is, you should always be cautious about it. It is the same for small things, it is the same for big things, it is the same for obvious places, and it is also the same for hidden places. Fang calls it "sincerity." ——Zhu Xi

◇ There is no essence except being alone, and there is no effort except being cautious. ——Liu Zongzhou

◇ When you are alone, no one pays attention. When a person is working independently without supervision, he should be cautious in his behavior. - "Ci Hai" Called Shen Du. ——Liu Shaoqi