The sentences in the Analects that can show the ancients' emphasis on character cultivation are introduced in detail as follows:

1. an upright man is open and poised while a petty man is anxious and worried..

This sentence means that a gentleman is open-minded and can keep a normal state of mind, while a villain is always worried and worried. This sentence emphasizes one of the virtues of a gentleman, an open mind and a peaceful mind, which is also a very important character cultivation. Only by having an open mind and a good attitude can we better face the challenges and difficulties in life.

second, I think twice a day about myself, and I am unfaithful for others. Make friends without believing them? Can you pass it on?

This sentence is a famous saying of Confucius, which means to reflect and examine your behavior every day and check whether you have done your best, be loyal and trustworthy, and study hard. This sentence emphasizes the importance of personal cultivation. Only by constantly reflecting on your own behavior can you make continuous progress and develop good character.

third, don't do to others what you don't want others to do to you.

this sentence means, don't do something to others that you don't want to be done. This sentence emphasizes the basic principle of dealing with others, and it is also a very important character accomplishment to treat others with goodwill and fairness and not to hurt others.

fourth, a gentleman means justice, while a villain means profit.

This sentence means that a gentleman values morality and justice, while a villain values self-interest and interests. This sentence emphasizes that a gentleman's moral character values righteousness over profit, which is also a very important character cultivation. Only by attaching importance to morality and justice can we better serve the society and the people.

5. Those who know are not as good as those who are good, and those who are good are not as good as those who are happy.

This sentence means that it is not enough to know knowledge or things, but it is more important to like and love it. Only by truly loving a thing or knowledge can we better understand and master it. This sentence emphasizes the importance of love and interest, which is also a very important character accomplishment. Only by loving a thing or knowledge can we better devote ourselves to it and achieve better results.

six, wealth can't be lewd, poverty can't be moved, and power can't be bent.

The meaning of this sentence is not to lose moral integrity when you are rich, not to change your ambition when you are poor, and not to give in to pressure when you are mighty. This sentence emphasizes the tenacity and firmness of personal character, and you should keep your principles and stand even in the face of difficulties and pressures. This kind of character cultivation is very important for a person's growth and development.